25125129 has 6 divisors (see below), whose sum is σ = 36291866. Its totient is φ = 16750080.

The previous prime is 25125083. The next prime is 25125151. The reversal of 25125129 is 92152152.

It can be written as a sum of positive squares in only one way, i.e., 23619600 + 1505529 = 4860^2 + 1227^2 .

It is not a de Polignac number, because 25125129 - 2⁸ = 25124873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25125329) 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, 1395832 + ... + 1395849.

Almost surely, 2^25125129 is an apocalyptic number.

It is an amenable number.

25125129 is a deficient number, since it is larger than the sum of its proper divisors (11166737).

25125129 is a wasteful number, since it uses less digits than its factorization.

25125129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791687 (or 2791684 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 25125129 is about 5012.4972817948. The cubic root of 25125129 is about 292.8888013932. Note that the first 4 decimals are identical.

The spelling of 25125129 in words is "twenty-five million, one hundred twenty-five thousand, one hundred twenty-nine".