25257412441 has 4 divisors (see below), whose sum is σ = 26355560832. Its totient is φ = 24159264052.

The previous prime is 25257412429. The next prime is 25257412457. The reversal of 25257412441 is 14421475252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25257412441 - 2²⁷ = 25123194713 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 25257412441.

It is not an unprimeable number, because it can be changed into a prime (25257415441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549074161 + ... + 549074206.

It is an arithmetic number, because the mean of its divisors is an integer number (6588890208).

Almost surely, 2^25257412441 is an apocalyptic number.

It is an amenable number.

25257412441 is a deficient number, since it is larger than the sum of its proper divisors (1098148391).

25257412441 is a wasteful number, since it uses less digits than its factorization.

25257412441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098148390.

The product of its digits is 89600, while the sum is 37.

Adding to 25257412441 its reverse (14421475252), we get a palindrome (39678887693).

The spelling of 25257412441 in words is "twenty-five billion, two hundred fifty-seven million, four hundred twelve thousand, four hundred forty-one".