13911725 has 12 divisors (see below), whose sum is σ = 17329620. Its totient is φ = 11078400.

The previous prime is 13911719. The next prime is 13911739. The reversal of 13911725 is 52711931.

13911725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 413449 + 13498276 = 643^2 + 3674^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13911725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4871 + ... + 7179.

It is an arithmetic number, because the mean of its divisors is an integer number (1444135).

Almost surely, 2^13911725 is an apocalyptic number.

It is an amenable number.

13911725 is a deficient number, since it is larger than the sum of its proper divisors (3417895).

13911725 is a wasteful number, since it uses less digits than its factorization.

13911725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560 (or 2555 counting only the distinct ones).

The product of its digits is 1890, while the sum is 29.

The square root of 13911725 is about 3729.8424899719. The cubic root of 13911725 is about 240.5065977331.

The spelling of 13911725 in words is "thirteen million, nine hundred eleven thousand, seven hundred twenty-five".