90225331392 has 56 divisors (see below), whose sum is σ = 272824220416. Its totient is φ = 25778665728.

The previous prime is 90225331387. The next prime is 90225331393. The reversal of 90225331392 is 29313352209.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×90225331392² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90225331392.

It is not an unprimeable number, because it can be changed into a prime (90225331393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33564628 + ... + 33567315.

Almost surely, 2^90225331392 is an apocalyptic number.

It is an amenable number.

90225331392 is an abundant number, since it is smaller than the sum of its proper divisors (182598889024).

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

90225331392 is a wasteful number, since it uses less digits than its factorization.

90225331392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67131965 (or 67131955 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 39.

The spelling of 90225331392 in words is "ninety billion, two hundred twenty-five million, three hundred thirty-one thousand, three hundred ninety-two".