25653129 has 4 divisors (see below), whose sum is σ = 34204176. Its totient is φ = 17102084.

The previous prime is 25653109. The next prime is 25653137. The reversal of 25653129 is 92135652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25653129 - 2⁸ = 25652873 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25653129.

It is not an unprimeable number, because it can be changed into a prime (25653109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4275519 + ... + 4275524.

It is an arithmetic number, because the mean of its divisors is an integer number (8551044).

Almost surely, 2^25653129 is an apocalyptic number.

It is an amenable number.

25653129 is a deficient number, since it is larger than the sum of its proper divisors (8551047).

25653129 is an equidigital number, since it uses as much as digits as its factorization.

25653129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8551046.

The product of its digits is 16200, while the sum is 33.

The square root of 25653129 is about 5064.8918053597. The cubic root of 25653129 is about 294.9262632905.

The spelling of 25653129 in words is "twenty-five million, six hundred fifty-three thousand, one hundred twenty-nine".