90726025 has 24 divisors (see below), whose sum is σ = 128288664. Its totient is φ = 63052800.

The previous prime is 90726023. The next prime is 90726029. The reversal of 90726025 is 52062709.

It can be written as a sum of positive squares in 12 ways, for example, as 57881664 + 32844361 = 7608^2 + 5731^2 .

It is not a de Polignac number, because 90726025 - 2¹ = 90726023 is a prime.

It is a super-2 number, since 2×90726025² = 16462423224601250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (90726023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2686 + ... + 13735.

It is an arithmetic number, because the mean of its divisors is an integer number (5345361).

Almost surely, 2^90726025 is an apocalyptic number.

It is an amenable number.

90726025 is a deficient number, since it is larger than the sum of its proper divisors (37562639).

90726025 is a wasteful number, since it uses less digits than its factorization.

90726025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16461 (or 16456 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 90726025 is about 9525.0209973522. The cubic root of 90726025 is about 449.3422902034.

The spelling of 90726025 in words is "ninety million, seven hundred twenty-six thousand, twenty-five".