1255320351 has 24 divisors (see below), whose sum is σ = 1827876960. Its totient is φ = 830149056.

The previous prime is 1255320343. The next prime is 1255320373. The reversal of 1255320351 is 1530235521.

It is a happy number.

1255320351 is a `hidden beast` number, since 125 + 532 + 0 + 3 + 5 + 1 = 666.

It is not a de Polignac number, because 1255320351 - 2³ = 1255320343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255320301) 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 23 ways as a sum of consecutive naturals, for example, 1131385 + ... + 1132493.

It is an arithmetic number, because the mean of its divisors is an integer number (76161540).

Almost surely, 2^1255320351 is an apocalyptic number.

1255320351 is a deficient number, since it is larger than the sum of its proper divisors (572556609).

1255320351 is a wasteful number, since it uses less digits than its factorization.

1255320351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1255320351 is about 35430.5002928268. The cubic root of 1255320351 is about 1078.7434949863.

Adding to 1255320351 its reverse (1530235521), we get a palindrome (2785555872).

The spelling of 1255320351 in words is "one billion, two hundred fifty-five million, three hundred twenty thousand, three hundred fifty-one".