13725239 has 16 divisors (see below), whose sum is σ = 16692480. Its totient is φ = 11122560.

The previous prime is 13725233. The next prime is 13725247. The reversal of 13725239 is 93252731.

It is a cyclic number.

It is not a de Polignac number, because 13725239 - 2⁸ = 13724983 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 (13725233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1622 + ... + 5484.

It is an arithmetic number, because the mean of its divisors is an integer number (1043280).

Almost surely, 2^13725239 is an apocalyptic number.

13725239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13725239 is a deficient number, since it is larger than the sum of its proper divisors (2967241).

13725239 is a wasteful number, since it uses less digits than its factorization.

13725239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910.

The product of its digits is 11340, while the sum is 32.

The square root of 13725239 is about 3704.7589665186. The cubic root of 13725239 is about 239.4270999631.

The spelling of 13725239 in words is "thirteen million, seven hundred twenty-five thousand, two hundred thirty-nine".