13151725 has 6 divisors (see below), whose sum is σ = 16308170. Its totient is φ = 10521360.

The previous prime is 13151713. The next prime is 13151729. The reversal of 13151725 is 52715131.

It can be written as a sum of positive squares in 3 ways, for example, as 285156 + 12866569 = 534^2 + 3587^2 .

It is not a de Polignac number, because 13151725 - 2¹¹ = 13149677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 526069 = 13151725 / (1 + 3 + 1 + 5 + 1 + 7 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 13151725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13151729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 263010 + ... + 263059.

Almost surely, 2^13151725 is an apocalyptic number.

It is an amenable number.

13151725 is a deficient number, since it is larger than the sum of its proper divisors (3156445).

13151725 is an equidigital number, since it uses as much as digits as its factorization.

13151725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526079 (or 526074 counting only the distinct ones).

The product of its digits is 1050, while the sum is 25.

The square root of 13151725 is about 3626.5307112997. The cubic root of 13151725 is about 236.0446925317.

Adding to 13151725 its reverse (52715131), we get a palindrome (65866856).

The spelling of 13151725 in words is "thirteen million, one hundred fifty-one thousand, seven hundred twenty-five".