13709425 has 12 divisors (see below), whose sum is σ = 17460316. Its totient is φ = 10670400.

The previous prime is 13709419. The next prime is 13709491. The reversal of 13709425 is 52490731.

It can be written as a sum of positive squares in 6 ways, for example, as 41616 + 13667809 = 204^2 + 3697^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13709425 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian 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, 6486 + ... + 8335.

Almost surely, 2^13709425 is an apocalyptic number.

It is an amenable number.

13709425 is a deficient number, since it is larger than the sum of its proper divisors (3750891).

13709425 is a wasteful number, since it uses less digits than its factorization.

13709425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14868 (or 14863 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 13709425 is about 3702.6240694945. The cubic root of 13709425 is about 239.3351099375.

The spelling of 13709425 in words is "thirteen million, seven hundred nine thousand, four hundred twenty-five".