165056425 has 6 divisors (see below), whose sum is σ = 204669998. Its totient is φ = 132045120.

The previous prime is 165056407. The next prime is 165056459. The reversal of 165056425 is 524650561.

It can be written as a sum of positive squares in 3 ways, for example, as 38291344 + 126765081 = 6188^2 + 11259^2 .

It is not a de Polignac number, because 165056425 - 2⁵ = 165056393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3301104 + ... + 3301153.

Almost surely, 2^165056425 is an apocalyptic number.

It is an amenable number.

165056425 is a deficient number, since it is larger than the sum of its proper divisors (39613573).

165056425 is an equidigital number, since it uses as much as digits as its factorization.

165056425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6602267 (or 6602262 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 165056425 is about 12847.4287310730. The cubic root of 165056425 is about 548.5431693723.

The spelling of 165056425 in words is "one hundred sixty-five million, fifty-six thousand, four hundred twenty-five".