63725125 has 8 divisors (see below), whose sum is σ = 79529112. Its totient is φ = 50980000.

The previous prime is 63725117. The next prime is 63725143. The reversal of 63725125 is 52152736.

It can be written as a sum of positive squares in 4 ways, for example, as 18378369 + 45346756 = 4287^2 + 6734^2 .

It is not a de Polignac number, because 63725125 - 2³ = 63725117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254776 + ... + 255025.

It is an arithmetic number, because the mean of its divisors is an integer number (9941139).

Almost surely, 2^63725125 is an apocalyptic number.

It is an amenable number.

63725125 is a deficient number, since it is larger than the sum of its proper divisors (15803987).

63725125 is an equidigital number, since it uses as much as digits as its factorization.

63725125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509816 (or 509806 counting only the distinct ones).

The product of its digits is 12600, while the sum is 31.

The square root of 63725125 is about 7982.8018264266. The cubic root of 63725125 is about 399.4265219502.

The spelling of 63725125 in words is "sixty-three million, seven hundred twenty-five thousand, one hundred twenty-five".