125624531 has 4 divisors (see below), whose sum is σ = 127499592. Its totient is φ = 123749472.

The previous prime is 125624519. The next prime is 125624537. The reversal of 125624531 is 135426521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135426521 = 317 ⋅427213.

It is a cyclic number.

It is not a de Polignac number, because 125624531 - 2¹⁸ = 125362387 is a prime.

It is a super-2 number, since 2×125624531² = 31563045577939922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125624494 and 125624503.

It is not an unprimeable number, because it can be changed into a prime (125624537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937430 + ... + 937563.

It is an arithmetic number, because the mean of its divisors is an integer number (31874898).

Almost surely, 2^125624531 is an apocalyptic number.

125624531 is a deficient number, since it is larger than the sum of its proper divisors (1875061).

125624531 is an equidigital number, since it uses as much as digits as its factorization.

125624531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875060.

The product of its digits is 7200, while the sum is 29.

The square root of 125624531 is about 11208.2349636328. The cubic root of 125624531 is about 500.8313250313.

The spelling of 125624531 in words is "one hundred twenty-five million, six hundred twenty-four thousand, five hundred thirty-one".