13539825 has 48 divisors (see below), whose sum is σ = 26803840. Its totient is φ = 6661440.

The previous prime is 13539811. The next prime is 13539853. The reversal of 13539825 is 52893531.

It is not a de Polignac number, because 13539825 - 2⁹ = 13539313 is a prime.

It is a super-2 number, since 2×13539825² = 366653722061250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13539825.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8004 + ... + 9546.

Almost surely, 2^13539825 is an apocalyptic number.

13539825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13539825 is a deficient number, since it is larger than the sum of its proper divisors (13264015).

13539825 is a wasteful number, since it uses less digits than its factorization.

13539825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1564 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 13539825 is about 3679.6501192369. The cubic root of 13539825 is about 238.3440695877.

The spelling of 13539825 in words is "thirteen million, five hundred thirty-nine thousand, eight hundred twenty-five".