125078125 has 16 divisors (see below), whose sum is σ = 156444912. Its totient is φ = 100000000.

The previous prime is 125078119. The next prime is 125078183. The reversal of 125078125 is 521870521.

It can be written as a sum of positive squares in 8 ways, for example, as 123010281 + 2067844 = 11091^2 + 1438^2 .

It is not a de Polignac number, because 125078125 - 2¹⁵ = 125045357 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 15 ways as a sum of consecutive naturals, for example, 77325 + ... + 78925.

It is an arithmetic number, because the mean of its divisors is an integer number (9777807).

Almost surely, 2^125078125 is an apocalyptic number.

It is an amenable number.

125078125 is a deficient number, since it is larger than the sum of its proper divisors (31366787).

125078125 is an frugal number, since it uses more digits than its factorization.

125078125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 125078125 is about 11183.8331979693. The cubic root of 125078125 is about 500.1041449728.

The spelling of 125078125 in words is "one hundred twenty-five million, seventy-eight thousand, one hundred twenty-five".