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1255200431 = 5364136947
BaseRepresentation
bin100101011010000…
…1101011010101111
310020110212210021212
41022310031122233
510032312403211
6324315145035
743051012322
oct11264153257
93213783255
101255200431
11594589731
122b044517b
13170080964
14bc9bc7b9
15752e138b
hex4ad0d6af

1255200431 has 8 divisors (see below), whose sum is σ = 1280913264. Its totient is φ = 1229562880.

The previous prime is 1255200407. The next prime is 1255200437. The reversal of 1255200431 is 1340025521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1255200431 is a prime.

It is a super-2 number, since 2×12552004312 = 3151056243965171522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1255200397 and 1255200406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255200437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15500 + ... + 52446.

It is an arithmetic number, because the mean of its divisors is an integer number (160114158).

Almost surely, 21255200431 is an apocalyptic number.

1255200431 is a deficient number, since it is larger than the sum of its proper divisors (25712833).

1255200431 is an equidigital number, since it uses as much as digits as its factorization.

1255200431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37641.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1255200431 is about 35428.8079251899. The cubic root of 1255200431 is about 1078.7091433195.

Adding to 1255200431 its reverse (1340025521), we get a palindrome (2595225952).

The spelling of 1255200431 in words is "one billion, two hundred fifty-five million, two hundred thousand, four hundred thirty-one".

Divisors: 1 53 641 33973 36947 1958191 23683027 1255200431