156728864825 has 48 divisors (see below), whose sum is σ = 210331287936. Its totient is φ = 115165670400.

The previous prime is 156728864819. The next prime is 156728864917. The reversal of 156728864825 is 528468827651.

It is not a de Polignac number, because 156728864825 - 2³² = 152433897529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87900884 + ... + 87902666.

It is an arithmetic number, because the mean of its divisors is an integer number (4381901832).

Almost surely, 2^156728864825 is an apocalyptic number.

It is an amenable number.

156728864825 is a deficient number, since it is larger than the sum of its proper divisors (53602423111).

156728864825 is a wasteful number, since it uses less digits than its factorization.

156728864825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994 (or 2989 counting only the distinct ones).

The product of its digits is 51609600, while the sum is 62.

The spelling of 156728864825 in words is "one hundred fifty-six billion, seven hundred twenty-eight million, eight hundred sixty-four thousand, eight hundred twenty-five".