90203255256 has 16 divisors (see below), whose sum is σ = 225508138200. Its totient is φ = 30067751744.

The previous prime is 90203255243. The next prime is 90203255257. The reversal of 90203255256 is 65255230209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90203255257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1879234461 + ... + 1879234508.

Almost surely, 2^90203255256 is an apocalyptic number.

It is an amenable number.

90203255256 is an abundant number, since it is smaller than the sum of its proper divisors (135304882944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90203255256 is a wasteful number, since it uses less digits than its factorization.

90203255256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3758468978 (or 3758468974 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 90203255256 in words is "ninety billion, two hundred three million, two hundred fifty-five thousand, two hundred fifty-six".