13625391 has 8 divisors (see below), whose sum is σ = 19564720. Its totient is φ = 8384832.

The previous prime is 13625371. The next prime is 13625411. The reversal of 13625391 is 19352631.

It is an interprime number because it is at equal distance from previous prime (13625371) and next prime (13625411).

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

It is not a de Polignac number, because 13625391 - 2⁷ = 13625263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13625371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174646 + ... + 174723.

It is an arithmetic number, because the mean of its divisors is an integer number (2445590).

Almost surely, 2^13625391 is an apocalyptic number.

13625391 is a deficient number, since it is larger than the sum of its proper divisors (5939329).

13625391 is a wasteful number, since it uses less digits than its factorization.

13625391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349385.

The product of its digits is 4860, while the sum is 30.

The square root of 13625391 is about 3691.2587284015. The cubic root of 13625391 is about 238.8450937403.

The spelling of 13625391 in words is "thirteen million, six hundred twenty-five thousand, three hundred ninety-one".