64156325 has 6 divisors (see below), whose sum is σ = 79553874. Its totient is φ = 51325040.

The previous prime is 64156307. The next prime is 64156343. The reversal of 64156325 is 52365146.

It is an interprime number because it is at equal distance from previous prime (64156307) and next prime (64156343).

It can be written as a sum of positive squares in 3 ways, for example, as 5189284 + 58967041 = 2278^2 + 7679^2 .

It is not a de Polignac number, because 64156325 - 2²⁰ = 63107749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64156291 and 64156300.

It is a congruent 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, 1283102 + ... + 1283151.

It is an arithmetic number, because the mean of its divisors is an integer number (13258979).

Almost surely, 2^64156325 is an apocalyptic number.

It is an amenable number.

64156325 is a deficient number, since it is larger than the sum of its proper divisors (15397549).

64156325 is a wasteful number, since it uses less digits than its factorization.

64156325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566263 (or 2566258 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 64156325 is about 8009.7643535874. The cubic root of 64156325 is about 400.3254122787.

The spelling of 64156325 in words is "sixty-four million, one hundred fifty-six thousand, three hundred twenty-five".