89181725508 has 18 divisors (see below), whose sum is σ = 225431584014. Its totient is φ = 29727241824.

The previous prime is 89181725483. The next prime is 89181725519. The reversal of 89181725508 is 80552718198.

89181725508 is a `hidden beast` number, since 8 + 9 + 1 + 81 + 7 + 2 + 550 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 67159759104 + 22021966404 = 259152^2 + 148398^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1238635041 + ... + 1238635112.

Almost surely, 2^89181725508 is an apocalyptic number.

It is an amenable number.

89181725508 is an abundant number, since it is smaller than the sum of its proper divisors (136249858506).

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

89181725508 is a wasteful number, since it uses less digits than its factorization.

89181725508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477270163 (or 2477270158 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 54.

The spelling of 89181725508 in words is "eighty-nine billion, one hundred eighty-one million, seven hundred twenty-five thousand, five hundred eight".