25255255253 has 4 divisors (see below), whose sum is σ = 25280587500. Its totient is φ = 25229923008.

The previous prime is 25255255229. The next prime is 25255255307. The reversal of 25255255253 is 35255255252.

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 19876206289 + 5379048964 = 140983^2 + 73342^2 .

It is a cyclic number.

It is not a de Polignac number, because 25255255253 - 2²⁸ = 24986819797 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 25255255253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255254253) 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, 12664628 + ... + 12666621.

It is an arithmetic number, because the mean of its divisors is an integer number (6320146875).

Almost surely, 2^25255255253 is an apocalyptic number.

It is an amenable number.

25255255253 is a deficient number, since it is larger than the sum of its proper divisors (25332247).

25255255253 is an equidigital number, since it uses as much as digits as its factorization.

25255255253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25332246.

The product of its digits is 750000, while the sum is 41.

Subtracting 25255255253 from its reverse (35255255252), we obtain a palindrome (9999999999).

The spelling of 25255255253 in words is "twenty-five billion, two hundred fifty-five million, two hundred fifty-five thousand, two hundred fifty-three".