13279825 has 24 divisors (see below), whose sum is σ = 18358200. Its totient is φ = 9461760.

The previous prime is 13279817. The next prime is 13279837. The reversal of 13279825 is 52897231.

It can be written as a sum of positive squares in 12 ways, for example, as 10036224 + 3243601 = 3168^2 + 1801^2 .

It is not a de Polignac number, because 13279825 - 2³ = 13279817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8721 + ... + 10129.

It is an arithmetic number, because the mean of its divisors is an integer number (764925).

Almost surely, 2^13279825 is an apocalyptic number.

It is an amenable number.

13279825 is a deficient number, since it is larger than the sum of its proper divisors (5078375).

13279825 is a wasteful number, since it uses less digits than its factorization.

13279825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461 (or 1456 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 13279825 is about 3644.1494206467. The cubic root of 13279825 is about 236.8085893011.

The spelling of 13279825 in words is "thirteen million, two hundred seventy-nine thousand, eight hundred twenty-five".