13257025 has 12 divisors (see below), whose sum is σ = 17406252. Its totient is φ = 9981440.

The previous prime is 13257017. The next prime is 13257043. The reversal of 13257025 is 52075231.

It can be written as a sum of positive squares in 6 ways, for example, as 144 + 13256881 = 12^2 + 3641^2 .

It is not a de Polignac number, because 13257025 - 2³ = 13257017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a congruent 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, 15172 + ... + 16021.

It is an arithmetic number, because the mean of its divisors is an integer number (1450521).

Almost surely, 2^13257025 is an apocalyptic number.

It is an amenable number.

13257025 is a deficient number, since it is larger than the sum of its proper divisors (4149227).

13257025 is a wasteful number, since it uses less digits than its factorization.

13257025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31220 (or 31215 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 13257025 is about 3641.0197747334. The cubic root of 13257025 is about 236.6729868929.

The spelling of 13257025 in words is "thirteen million, two hundred fifty-seven thousand, twenty-five".