13197825 has 18 divisors (see below), whose sum is σ = 23639174. Its totient is φ = 7038720.

The previous prime is 13197817. The next prime is 13197841. The reversal of 13197825 is 52879131.

It can be written as a sum of positive squares in 3 ways, for example, as 3538161 + 9659664 = 1881^2 + 3108^2 .

It is not a de Polignac number, because 13197825 - 2³ = 13197817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13197825.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29104 + ... + 29553.

Almost surely, 2^13197825 is an apocalyptic number.

13197825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13197825 is a deficient number, since it is larger than the sum of its proper divisors (10441349).

13197825 is a wasteful number, since it uses less digits than its factorization.

13197825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58673 (or 58665 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 13197825 is about 3632.8810880622. The cubic root of 13197825 is about 236.3201689613.

The spelling of 13197825 in words is "thirteen million, one hundred ninety-seven thousand, eight hundred twenty-five".