13406625 has 48 divisors (see below), whose sum is σ = 25625808. Its totient is φ = 6720000.

The previous prime is 13406599. The next prime is 13406651. The reversal of 13406625 is 52660431.

13406625 is a `hidden beast` number, since 1 + 34 + 0 + 6 + 625 = 666.

It is an interprime number because it is at equal distance from previous prime (13406599) and next prime (13406651).

It can be written as a sum of positive squares in 8 ways, for example, as 853776 + 12552849 = 924^2 + 3543^2 .

It is not a de Polignac number, because 13406625 - 2⁸ = 13406369 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18775 + ... + 19475.

It is an arithmetic number, because the mean of its divisors is an integer number (533871).

Almost surely, 2^13406625 is an apocalyptic number.

13406625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13406625 is a deficient number, since it is larger than the sum of its proper divisors (12219183).

13406625 is a wasteful number, since it uses less digits than its factorization.

13406625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 13406625 is about 3661.5058377668. The cubic root of 13406625 is about 237.5599110169.

The spelling of 13406625 in words is "thirteen million, four hundred six thousand, six hundred twenty-five".