90425564599 has 4 divisors (see below), whose sum is σ = 90710819064. Its totient is φ = 90140310136.

The previous prime is 90425564597. The next prime is 90425564629. The reversal of 90425564599 is 99546552409.

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 90425564599 - 2¹ = 90425564597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90425564597) 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, 142626757 + ... + 142627390.

It is an arithmetic number, because the mean of its divisors is an integer number (22677704766).

Almost surely, 2^90425564599 is an apocalyptic number.

90425564599 is a deficient number, since it is larger than the sum of its proper divisors (285254465).

90425564599 is a wasteful number, since it uses less digits than its factorization.

90425564599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285254464.

The product of its (nonzero) digits is 17496000, while the sum is 58.

The spelling of 90425564599 in words is "ninety billion, four hundred twenty-five million, five hundred sixty-four thousand, five hundred ninety-nine".