63670517625 has 432 divisors, whose sum is σ = 138874829184. Its totient is φ = 25822368000.

The previous prime is 63670517591. The next prime is 63670517629. The reversal of 63670517625 is 52671507636.

It is not a de Polignac number, because 63670517625 - 2²³ = 63662129017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63670517629) by changing a digit.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 2768283364 + ... + 2768283386.

It is an arithmetic number, because the mean of its divisors is an integer number (321469512).

Almost surely, 2^63670517625 is an apocalyptic number.

63670517625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63670517625 is an abundant number, since it is smaller than the sum of its proper divisors (75204311559).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63670517625 is a wasteful number, since it uses less digits than its factorization.

63670517625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 48.

The spelling of 63670517625 in words is "sixty-three billion, six hundred seventy million, five hundred seventeen thousand, six hundred twenty-five".