13402725 has 48 divisors (see below), whose sum is σ = 25891200. Its totient is φ = 6115200.

The previous prime is 13402717. The next prime is 13402729. The reversal of 13402725 is 52720431.

It is not a de Polignac number, because 13402725 - 2³ = 13402717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13402695 and 13402704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25465 + ... + 25985.

It is an arithmetic number, because the mean of its divisors is an integer number (539400).

Almost surely, 2^13402725 is an apocalyptic number.

13402725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13402725 is a deficient number, since it is larger than the sum of its proper divisors (12488475).

13402725 is an equidigital number, since it uses as much as digits as its factorization.

13402725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 13402725 is about 3660.9732312597. The cubic root of 13402725 is about 237.5368733146.

The spelling of 13402725 in words is "thirteen million, four hundred two thousand, seven hundred twenty-five".