165630025 has 24 divisors (see below), whose sum is σ = 224985600. Its totient is φ = 119956800.

The previous prime is 165630013. The next prime is 165630041. The reversal of 165630025 is 520036561.

165630025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165630025 - 2²³ = 157241417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165629975 and 165630002.

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, 72856 + ... + 75094.

It is an arithmetic number, because the mean of its divisors is an integer number (9374400).

Almost surely, 2^165630025 is an apocalyptic number.

It is an amenable number.

165630025 is a deficient number, since it is larger than the sum of its proper divisors (59355575).

165630025 is a wasteful number, since it uses less digits than its factorization.

165630025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529 (or 2524 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 165630025 is about 12869.7329032113. The cubic root of 165630025 is about 549.1778625943.

Adding to 165630025 its reverse (520036561), we get a palindrome (685666586).

The spelling of 165630025 in words is "one hundred sixty-five million, six hundred thirty thousand, twenty-five".