90811004525 has 12 divisors (see below), whose sum is σ = 113465234784. Its totient is φ = 72094230000.

The previous prime is 90811004497. The next prime is 90811004563. The reversal of 90811004525 is 52540011809.

It is not a de Polignac number, because 90811004525 - 2¹⁰ = 90811003501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13861001 + ... + 13867550.

It is an arithmetic number, because the mean of its divisors is an integer number (9455436232).

Almost surely, 2^90811004525 is an apocalyptic number.

It is an amenable number.

90811004525 is a deficient number, since it is larger than the sum of its proper divisors (22654230259).

90811004525 is a wasteful number, since it uses less digits than its factorization.

90811004525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27728692 (or 27728687 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 90811004525 in words is "ninety billion, eight hundred eleven million, four thousand, five hundred twenty-five".