13625901 has 20 divisors (see below), whose sum is σ = 20509500. Its totient is φ = 9014976.

The previous prime is 13625893. The next prime is 13625903. The reversal of 13625901 is 10952631.

13625901 is a `hidden beast` number, since 13 + 62 + 590 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1368900 + 12257001 = 1170^2 + 3501^2 .

It is not a de Polignac number, because 13625901 - 2³ = 13625893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13625903) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11505 + ... + 12633.

It is an arithmetic number, because the mean of its divisors is an integer number (1025475).

Almost surely, 2^13625901 is an apocalyptic number.

It is an amenable number.

13625901 is a deficient number, since it is larger than the sum of its proper divisors (6883599).

13625901 is a wasteful number, since it uses less digits than its factorization.

13625901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 13625901 is about 3691.3278098809. The cubic root of 13625901 is about 238.8480737032.

The spelling of 13625901 in words is "thirteen million, six hundred twenty-five thousand, nine hundred one".