125664725 has 6 divisors (see below), whose sum is σ = 155824290. Its totient is φ = 100531760.

The previous prime is 125664677. The next prime is 125664751. The reversal of 125664725 is 527466521.

It can be written as a sum of positive squares in 3 ways, for example, as 44970436 + 80694289 = 6706^2 + 8983^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125664725 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, 2513270 + ... + 2513319.

It is an arithmetic number, because the mean of its divisors is an integer number (25970715).

Almost surely, 2^125664725 is an apocalyptic number.

It is an amenable number.

125664725 is a deficient number, since it is larger than the sum of its proper divisors (30159565).

125664725 is an equidigital number, since it uses as much as digits as its factorization.

125664725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026599 (or 5026594 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 125664725 is about 11210.0278768610. The cubic root of 125664725 is about 500.8847335697.

The spelling of 125664725 in words is "one hundred twenty-five million, six hundred sixty-four thousand, seven hundred twenty-five".