124991425 has 12 divisors (see below), whose sum is σ = 166912060. Its totient is φ = 92301120.

The previous prime is 124991413. The next prime is 124991459. The reversal of 124991425 is 524199421.

It can be written as a sum of positive squares in 6 ways, for example, as 54582544 + 70408881 = 7388^2 + 8391^2 .

It is not a de Polignac number, because 124991425 - 2⁵ = 124991393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191970 + ... + 192619.

Almost surely, 2^124991425 is an apocalyptic number.

It is an amenable number.

124991425 is a deficient number, since it is larger than the sum of its proper divisors (41920635).

124991425 is a wasteful number, since it uses less digits than its factorization.

124991425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384612 (or 384607 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 124991425 is about 11179.9563952638. The cubic root of 124991425 is about 499.9885664052.

It can be divided in two parts, 12499 and 1425, that added together give a square (13924 = 118²).

The spelling of 124991425 in words is "one hundred twenty-four million, nine hundred ninety-one thousand, four hundred twenty-five".