63738625 has 8 divisors (see below), whose sum is σ = 79545960. Its totient is φ = 50990800.

The previous prime is 63738611. The next prime is 63738637. The reversal of 63738625 is 52683736.

It can be written as a sum of positive squares in 4 ways, for example, as 1896129 + 61842496 = 1377^2 + 7864^2 .

It is not a de Polignac number, because 63738625 - 2¹⁵ = 63705857 is a prime.

It is a super-2 number, since 2×63738625² = 8125224633781250, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254830 + ... + 255079.

It is an arithmetic number, because the mean of its divisors is an integer number (9943245).

Almost surely, 2^63738625 is an apocalyptic number.

It is an amenable number.

63738625 is a deficient number, since it is larger than the sum of its proper divisors (15807335).

63738625 is an equidigital number, since it uses as much as digits as its factorization.

63738625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509924 (or 509914 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 63738625 is about 7983.6473494262. The cubic root of 63738625 is about 399.4547257778.

The spelling of 63738625 in words is "sixty-three million, seven hundred thirty-eight thousand, six hundred twenty-five".