63166725 has 36 divisors (see below), whose sum is σ = 115295076. Its totient is φ = 33047040.

The previous prime is 63166721. The next prime is 63166739. The reversal of 63166725 is 52766136.

63166725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1292769 + 61873956 = 1137^2 + 7866^2 .

It is not a de Polignac number, because 63166725 - 2² = 63166721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63166725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63166721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9277 + ... + 14573.

It is an arithmetic number, because the mean of its divisors is an integer number (3202641).

Almost surely, 2^63166725 is an apocalyptic number.

It is an amenable number.

63166725 is a deficient number, since it is larger than the sum of its proper divisors (52128351).

63166725 is a wasteful number, since it uses less digits than its factorization.

63166725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5366 (or 5358 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 63166725 is about 7947.7496815136. The cubic root of 63166725 is about 398.2564212928.

It can be divided in two parts, 6316 and 6725, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 63166725 in words is "sixty-three million, one hundred sixty-six thousand, seven hundred twenty-five".