1255502531 has 4 divisors (see below), whose sum is σ = 1279191312. Its totient is φ = 1231813752.

The previous prime is 1255502527. The next prime is 1255502609. The reversal of 1255502531 is 1352055521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1255502531 - 2² = 1255502527 is a prime.

It is a super-2 number, since 2×1255502531² = 3152573210694811922, 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 = 1255502494 and 1255502503.

It is not an unprimeable number, because it can be changed into a prime (1255504531) 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, 11844311 + ... + 11844416.

It is an arithmetic number, because the mean of its divisors is an integer number (319797828).

Almost surely, 2^1255502531 is an apocalyptic number.

1255502531 is a deficient number, since it is larger than the sum of its proper divisors (23688781).

1255502531 is an equidigital number, since it uses as much as digits as its factorization.

1255502531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23688780.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1255502531 is about 35433.0711482931. The cubic root of 1255502531 is about 1078.7956771467.

The spelling of 1255502531 in words is "one billion, two hundred fifty-five million, five hundred two thousand, five hundred thirty-one".