1255503201 has 4 divisors (see below), whose sum is σ = 1674004272. Its totient is φ = 837002132.

The previous prime is 1255503169. The next prime is 1255503217. The reversal of 1255503201 is 1023055521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1255503201 - 2⁵ = 1255503169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255503251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209250531 + ... + 209250536.

It is an arithmetic number, because the mean of its divisors is an integer number (418501068).

Almost surely, 2^1255503201 is an apocalyptic number.

It is an amenable number.

1255503201 is a deficient number, since it is larger than the sum of its proper divisors (418501071).

1255503201 is an equidigital number, since it uses as much as digits as its factorization.

1255503201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418501070.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1255503201 is about 35433.0806027362. The cubic root of 1255503201 is about 1078.7958690467.

Adding to 1255503201 its reverse (1023055521), we get a palindrome (2278558722).

The spelling of 1255503201 in words is "one billion, two hundred fifty-five million, five hundred three thousand, two hundred one".