90725575 has 24 divisors (see below), whose sum is σ = 115706880. Its totient is φ = 70543200.

The previous prime is 90725563. The next prime is 90725581. The reversal of 90725575 is 57552709.

It is not a de Polignac number, because 90725575 - 2¹¹ = 90723527 is a prime.

It is a super-2 number, since 2×90725575² = 16462259918161250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139902 + ... + 140548.

It is an arithmetic number, because the mean of its divisors is an integer number (4821120).

Almost surely, 2^90725575 is an apocalyptic number.

90725575 is a deficient number, since it is larger than the sum of its proper divisors (24981305).

90725575 is a wasteful number, since it uses less digits than its factorization.

90725575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 110250, while the sum is 40.

The square root of 90725575 is about 9524.9973753277. The cubic root of 90725575 is about 449.3415472914.

The spelling of 90725575 in words is "ninety million, seven hundred twenty-five thousand, five hundred seventy-five".