13925865 has 16 divisors (see below), whose sum is σ = 22756608. Its totient is φ = 7268736.

The previous prime is 13925837. The next prime is 13925893. The reversal of 13925865 is 56852931.

It is an interprime number because it is at equal distance from previous prime (13925837) and next prime (13925893).

It is not a de Polignac number, because 13925865 - 2¹⁸ = 13663721 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9172 + ... + 10581.

It is an arithmetic number, because the mean of its divisors is an integer number (1422288).

Almost surely, 2^13925865 is an apocalyptic number.

13925865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13925865 is a deficient number, since it is larger than the sum of its proper divisors (8830743).

13925865 is a wasteful number, since it uses less digits than its factorization.

13925865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19808.

The product of its digits is 64800, while the sum is 39.

The square root of 13925865 is about 3731.7375309633. The cubic root of 13925865 is about 240.5880544840.

The spelling of 13925865 in words is "thirteen million, nine hundred twenty-five thousand, eight hundred sixty-five".