13917625 has 8 divisors (see below), whose sum is σ = 17369352. Its totient is φ = 11134000.

The previous prime is 13917619. The next prime is 13917637. The reversal of 13917625 is 52671931.

It can be written as a sum of positive squares in 4 ways, for example, as 3728761 + 10188864 = 1931^2 + 3192^2 .

It is not a de Polignac number, because 13917625 - 2¹³ = 13909433 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55546 + ... + 55795.

It is an arithmetic number, because the mean of its divisors is an integer number (2171169).

Almost surely, 2^13917625 is an apocalyptic number.

It is an amenable number.

13917625 is a deficient number, since it is larger than the sum of its proper divisors (3451727).

13917625 is an equidigital number, since it uses as much as digits as its factorization.

13917625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111356 (or 111346 counting only the distinct ones).

The product of its digits is 11340, while the sum is 34.

The square root of 13917625 is about 3730.6333242494. The cubic root of 13917625 is about 240.5405927595.

The spelling of 13917625 in words is "thirteen million, nine hundred seventeen thousand, six hundred twenty-five".