13504725 has 96 divisors (see below), whose sum is σ = 28470400. Its totient is φ = 6298560.

The previous prime is 13504717. The next prime is 13504727. The reversal of 13504725 is 52740531.

It is a happy number.

It is not a de Polignac number, because 13504725 - 2³ = 13504717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13504727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 710766 + ... + 710784.

Almost surely, 2^13504725 is an apocalyptic number.

13504725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13504725 is an abundant number, since it is smaller than the sum of its proper divisors (14965675).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13504725 is an equidigital number, since it uses as much as digits as its factorization.

13504725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 13504725 is about 3674.8775489804. The cubic root of 13504725 is about 238.1379340733.

The spelling of 13504725 in words is "thirteen million, five hundred four thousand, seven hundred twenty-five".