25253635253 has 16 divisors (see below), whose sum is σ = 31505763840. Its totient is φ = 19665212400.

The previous prime is 25253635241. The next prime is 25253635273. The reversal of 25253635253 is 35253635252.

It is a cyclic number.

It is not a de Polignac number, because 25253635253 - 2¹⁰ = 25253634229 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 25253635253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25253635273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10778 + ... + 224996.

It is an arithmetic number, because the mean of its divisors is an integer number (1969110240).

Almost surely, 2^25253635253 is an apocalyptic number.

It is an amenable number.

25253635253 is a deficient number, since it is larger than the sum of its proper divisors (6252128587).

25253635253 is a wasteful number, since it uses less digits than its factorization.

25253635253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215768.

The product of its digits is 810000, while the sum is 41.

Subtracting 25253635253 from its reverse (35253635252), we obtain a palindrome (9999999999).

The spelling of 25253635253 in words is "twenty-five billion, two hundred fifty-three million, six hundred thirty-five thousand, two hundred fifty-three".