25252146629 has 4 divisors (see below), whose sum is σ = 25324502700. Its totient is φ = 25179790560.

The previous prime is 25252146587. The next prime is 25252146659. The reversal of 25252146629 is 92664125252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16873490404 + 8378656225 = 129898^2 + 91535^2 .

It is a cyclic number.

It is not a de Polignac number, because 25252146629 - 2⁸ = 25252146373 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 25252146629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25252146659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36177512 + ... + 36178209.

It is an arithmetic number, because the mean of its divisors is an integer number (6331125675).

Almost surely, 2^25252146629 is an apocalyptic number.

It is an amenable number.

25252146629 is a deficient number, since it is larger than the sum of its proper divisors (72356071).

25252146629 is an equidigital number, since it uses as much as digits as its factorization.

25252146629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72356070.

The product of its digits is 518400, while the sum is 44.

The spelling of 25252146629 in words is "twenty-five billion, two hundred fifty-two million, one hundred forty-six thousand, six hundred twenty-nine".