25525129 has 6 divisors (see below), whose sum is σ = 29692554. Its totient is φ = 21878640.

The previous prime is 25525127. The next prime is 25525223. The reversal of 25525129 is 92152552.

It can be written as a sum of positive squares in only one way, i.e., 14235529 + 11289600 = 3773^2 + 3360^2 .

It is not a de Polignac number, because 25525129 - 2¹ = 25525127 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 25525129.

It is not an unprimeable number, because it can be changed into a prime (25525127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260412 + ... + 260509.

It is an arithmetic number, because the mean of its divisors is an integer number (4948759).

Almost surely, 2^25525129 is an apocalyptic number.

It is an amenable number.

25525129 is a deficient number, since it is larger than the sum of its proper divisors (4167425).

25525129 is an equidigital number, since it uses as much as digits as its factorization.

25525129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520935 (or 520928 counting only the distinct ones).

The product of its digits is 9000, while the sum is 31.

The square root of 25525129 is about 5052.2399982582. The cubic root of 25525129 is about 294.4349194129.

The spelling of 25525129 in words is "twenty-five million, five hundred twenty-five thousand, one hundred twenty-nine".