125565406 has 8 divisors (see below), whose sum is σ = 188564544. Its totient is φ = 62710560.

The previous prime is 125565379. The next prime is 125565413. The reversal of 125565406 is 604565521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33870 + ... + 37393.

It is an arithmetic number, because the mean of its divisors is an integer number (23570568).

Almost surely, 2^125565406 is an apocalyptic number.

125565406 is a deficient number, since it is larger than the sum of its proper divisors (62999138).

125565406 is an equidigital number, since it uses as much as digits as its factorization.

125565406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72146.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 125565406 is about 11205.5970836007. The cubic root of 125565406 is about 500.7527408604.

The spelling of 125565406 in words is "one hundred twenty-five million, five hundred sixty-five thousand, four hundred six".