64156166282725 has 24 divisors (see below), whose sum is σ = 87270632759520. Its totient is φ = 46398365016000.

The previous prime is 64156166282647. The next prime is 64156166282783. The reversal of 64156166282725 is 52728266165146.

It is not a de Polignac number, because 64156166282725 - 2¹⁷ = 64156166151653 is a prime.

It is a congruent number.

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, 651613206 + ... + 651711655.

It is an arithmetic number, because the mean of its divisors is an integer number (3636276364980).

Almost surely, 2^{64156166282725} is an apocalyptic number.

It is an amenable number.

64156166282725 is a deficient number, since it is larger than the sum of its proper divisors (23114466476795).

64156166282725 is a wasteful number, since it uses less digits than its factorization.

64156166282725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303325061 (or 1303325056 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 61.

The spelling of 64156166282725 in words is "sixty-four trillion, one hundred fifty-six billion, one hundred sixty-six million, two hundred eighty-two thousand, seven hundred twenty-five".