165562425 has 54 divisors (see below), whose sum is σ = 344978478. Its totient is φ = 75680640.

The previous prime is 165562379. The next prime is 165562489. The reversal of 165562425 is 524265561.

165562425 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 624 + 25 = 666.

165562425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 4678569 + 160883856 = 2163^2 + 12684^2 .

It is not a de Polignac number, because 165562425 - 2¹² = 165558329 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 165562425.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 3517 + ... + 18533.

Almost surely, 2^165562425 is an apocalyptic number.

165562425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165562425 is an abundant number, since it is smaller than the sum of its proper divisors (179416053).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165562425 is a wasteful number, since it uses less digits than its factorization.

165562425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15047 (or 15032 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 165562425 is about 12867.1063180499. The cubic root of 165562425 is about 549.1031388734.

It can be divided in two parts, 16556 and 2425, that added together give a palindrome (18981).

The spelling of 165562425 in words is "one hundred sixty-five million, five hundred sixty-two thousand, four hundred twenty-five".