55525725 has 18 divisors (see below), whose sum is σ = 99453146. Its totient is φ = 29613600.

The previous prime is 55525697. The next prime is 55525739. The reversal of 55525725 is 52752555.

It can be written as a sum of positive squares in 3 ways, for example, as 3426201 + 52099524 = 1851^2 + 7218^2 .

It is not a de Polignac number, because 55525725 - 2⁷ = 55525597 is a prime.

It is a super-2 number, since 2×55525725² = 6166212273551250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55525725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 123166 + ... + 123615.

Almost surely, 2^55525725 is an apocalyptic number.

It is an amenable number.

55525725 is a deficient number, since it is larger than the sum of its proper divisors (43927421).

55525725 is a wasteful number, since it uses less digits than its factorization.

55525725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246797 (or 246789 counting only the distinct ones).

The product of its digits is 87500, while the sum is 36.

The square root of 55525725 is about 7451.5585618044. The cubic root of 55525725 is about 381.5031070335.

The spelling of 55525725 in words is "fifty-five million, five hundred twenty-five thousand, seven hundred twenty-five".