396638501625 has 160 divisors (see below), whose sum is σ = 764950957056. Its totient is φ = 204275520000.

The previous prime is 396638501621. The next prime is 396638501653. The reversal of 396638501625 is 526105836693.

It is a happy number.

396638501625 is a `hidden beast` number, since 3 + 9 + 6 + 6 + 3 + 8 + 5 + 0 + 1 + 625 = 666.

It is not a de Polignac number, because 396638501625 - 2² = 396638501621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (396638501621) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 186126810 + ... + 186128940.

Almost surely, 2^396638501625 is an apocalyptic number.

It is an amenable number.

396638501625 is a deficient number, since it is larger than the sum of its proper divisors (368312455431).

396638501625 is a wasteful number, since it uses less digits than its factorization.

396638501625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 396638501625 in words is "three hundred ninety-six billion, six hundred thirty-eight million, five hundred one thousand, six hundred twenty-five".