90425043855 has 48 divisors (see below), whose sum is σ = 157425802560. Its totient is φ = 48015120384.

The previous prime is 90425043833. The next prime is 90425043887. The reversal of 90425043855 is 55834052409.

90425043855 is a `hidden beast` number, since 90 + 4 + 2 + 504 + 3 + 8 + 55 = 666.

It is not a de Polignac number, because 90425043855 - 2²⁰ = 90423995279 is a prime.

It is a super-2 number, since 2×90425043855² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 90425043855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10868157 + ... + 10876473.

It is an arithmetic number, because the mean of its divisors is an integer number (3279704220).

Almost surely, 2^90425043855 is an apocalyptic number.

90425043855 is a deficient number, since it is larger than the sum of its proper divisors (67000758705).

90425043855 is a wasteful number, since it uses less digits than its factorization.

90425043855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9360 (or 9357 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 90425043855 in words is "ninety billion, four hundred twenty-five million, forty-three thousand, eight hundred fifty-five".