25453512253 has 4 divisors (see below), whose sum is σ = 27411474748. Its totient is φ = 23495549760.

The previous prime is 25453512223. The next prime is 25453512257. The reversal of 25453512253 is 35221535452.

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 8061705369 + 17391806884 = 89787^2 + 131878^2 .

It is a cyclic number.

It is not a de Polignac number, because 25453512253 - 2⁵ = 25453512221 is a prime.

It is a super-2 number, since 2×25453512253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25453512257) 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, 978981228 + ... + 978981253.

It is an arithmetic number, because the mean of its divisors is an integer number (6852868687).

Almost surely, 2^25453512253 is an apocalyptic number.

It is an amenable number.

25453512253 is a deficient number, since it is larger than the sum of its proper divisors (1957962495).

25453512253 is a wasteful number, since it uses less digits than its factorization.

25453512253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957962494.

The product of its digits is 180000, while the sum is 37.

The spelling of 25453512253 in words is "twenty-five billion, four hundred fifty-three million, five hundred twelve thousand, two hundred fifty-three".