90881725 has 24 divisors (see below), whose sum is σ = 124242048. Its totient is φ = 65395200.

The previous prime is 90881723. The next prime is 90881743. The reversal of 90881725 is 52718809.

It is not a de Polignac number, because 90881725 - 2¹ = 90881723 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 (90881723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24972 + ... + 28378.

It is an arithmetic number, because the mean of its divisors is an integer number (5176752).

Almost surely, 2^90881725 is an apocalyptic number.

It is an amenable number.

90881725 is a deficient number, since it is larger than the sum of its proper divisors (33360323).

90881725 is a wasteful number, since it uses less digits than its factorization.

90881725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525 (or 3520 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 90881725 is about 9533.1907040613. The cubic root of 90881725 is about 449.5991904349.

The spelling of 90881725 in words is "ninety million, eight hundred eighty-one thousand, seven hundred twenty-five".