625632638875 has 32 divisors (see below), whose sum is σ = 821985203520. Its totient is φ = 474105139200.

The previous prime is 625632638867. The next prime is 625632638881. The reversal of 625632638875 is 578836236526.

It is not a de Polignac number, because 625632638875 - 2³ = 625632638867 is a prime.

It is a super-2 number, since 2×625632638875² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36169729 + ... + 36187021.

It is an arithmetic number, because the mean of its divisors is an integer number (25687037610).

Almost surely, 2^625632638875 is an apocalyptic number.

625632638875 is a deficient number, since it is larger than the sum of its proper divisors (196352564645).

625632638875 is a wasteful number, since it uses less digits than its factorization.

625632638875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32560 (or 32550 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 61.

The spelling of 625632638875 in words is "six hundred twenty-five billion, six hundred thirty-two million, six hundred thirty-eight thousand, eight hundred seventy-five".