25252423453 has 4 divisors (see below), whose sum is σ = 25252832668. Its totient is φ = 25252014240.

The previous prime is 25252423439. The next prime is 25252423459. The reversal of 25252423453 is 35432425252.

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 3331252089 + 21921171364 = 57717^2 + 148058^2 .

It is a cyclic number.

It is not a de Polignac number, because 25252423453 - 2¹⁷ = 25252292381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25252423459) 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, 91026 + ... + 242467.

It is an arithmetic number, because the mean of its divisors is an integer number (6313208167).

Almost surely, 2^25252423453 is an apocalyptic number.

It is an amenable number.

25252423453 is a deficient number, since it is larger than the sum of its proper divisors (409215).

25252423453 is an equidigital number, since it uses as much as digits as its factorization.

25252423453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409214.

The product of its digits is 288000, while the sum is 37.

The spelling of 25252423453 in words is "twenty-five billion, two hundred fifty-two million, four hundred twenty-three thousand, four hundred fifty-three".