125664125 has 8 divisors (see below), whose sum is σ = 156828984. Its totient is φ = 100531200.

The previous prime is 125664089. The next prime is 125664167. The reversal of 125664125 is 521466521.

It can be written as a sum of positive squares in 4 ways, for example, as 9821956 + 115842169 = 3134^2 + 10763^2 .

It is not a de Polignac number, because 125664125 - 2¹⁶ = 125598589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 125664091 and 125664100.

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, 502532 + ... + 502781.

It is an arithmetic number, because the mean of its divisors is an integer number (19603623).

Almost surely, 2^125664125 is an apocalyptic number.

It is an amenable number.

125664125 is a deficient number, since it is larger than the sum of its proper divisors (31164859).

125664125 is an equidigital number, since it uses as much as digits as its factorization.

125664125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005328 (or 1005318 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 125664125 is about 11210.0011150758. The cubic root of 125664125 is about 500.8839363920.

It can be divided in two parts, 1256641 and 25, that multiplied together give a square (31416025 = 5605²).

The spelling of 125664125 in words is "one hundred twenty-five million, six hundred sixty-four thousand, one hundred twenty-five".