625678817975 has 12 divisors (see below), whose sum is σ = 794764704720. Its totient is φ = 488334686400.

The previous prime is 625678817971. The next prime is 625678818013. The reversal of 625678817975 is 579718876526.

It is not a de Polignac number, because 625678817975 - 2² = 625678817971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 625678817899 and 625678817908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625678817971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305208155 + ... + 305210204.

It is an arithmetic number, because the mean of its divisors is an integer number (66230392060).

Almost surely, 2^625678817975 is an apocalyptic number.

625678817975 is a deficient number, since it is larger than the sum of its proper divisors (169085886745).

625678817975 is a wasteful number, since it uses less digits than its factorization.

625678817975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610418410 (or 610418405 counting only the distinct ones).

The product of its digits is 355622400, while the sum is 71.

The spelling of 625678817975 in words is "six hundred twenty-five billion, six hundred seventy-eight million, eight hundred seventeen thousand, nine hundred seventy-five".