63756725 has 6 divisors (see below), whose sum is σ = 79058370. Its totient is φ = 51005360.

The previous prime is 63756701. The next prime is 63756733. The reversal of 63756725 is 52765736.

It can be written as a sum of positive squares in 3 ways, for example, as 108241 + 63648484 = 329^2 + 7978^2 .

It is not a de Polignac number, because 63756725 - 2¹² = 63752629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1275110 + ... + 1275159.

It is an arithmetic number, because the mean of its divisors is an integer number (13176395).

Almost surely, 2^63756725 is an apocalyptic number.

It is an amenable number.

63756725 is a deficient number, since it is larger than the sum of its proper divisors (15301645).

63756725 is a wasteful number, since it uses less digits than its factorization.

63756725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550279 (or 2550274 counting only the distinct ones).

The product of its digits is 264600, while the sum is 41.

The square root of 63756725 is about 7984.7808360656. The cubic root of 63756725 is about 399.4925335501.

The spelling of 63756725 in words is "sixty-three million, seven hundred fifty-six thousand, seven hundred twenty-five".