124640625 has 28 divisors (see below), whose sum is σ = 207809840. Its totient is φ = 66450000.

The previous prime is 124640623. The next prime is 124640687. The reversal of 124640625 is 526046421.

It is not a de Polignac number, because 124640625 - 2¹ = 124640623 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 124640592 and 124640601.

It is not an unprimeable number, because it can be changed into a prime (124640623) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 45546 + ... + 48204.

It is an arithmetic number, because the mean of its divisors is an integer number (7421780).

Almost surely, 2^124640625 is an apocalyptic number.

124640625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

124640625 is a deficient number, since it is larger than the sum of its proper divisors (83169215).

124640625 is an frugal number, since it uses more digits than its factorization.

124640625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692 (or 2667 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 124640625 is about 11164.2565807133. The cubic root of 124640625 is about 499.5203733971.

The spelling of 124640625 in words is "one hundred twenty-four million, six hundred forty thousand, six hundred twenty-five".