25422113251 has 4 divisors (see below), whose sum is σ = 25423177752. Its totient is φ = 25421048752.

The previous prime is 25422113219. The next prime is 25422113257. The reversal of 25422113251 is 15231122452.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25422113251 - 2⁵ = 25422113219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25422113257) 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, 495586 + ... + 544471.

It is an arithmetic number, because the mean of its divisors is an integer number (6355794438).

Almost surely, 2^25422113251 is an apocalyptic number.

25422113251 is a deficient number, since it is larger than the sum of its proper divisors (1064501).

25422113251 is a wasteful number, since it uses less digits than its factorization.

25422113251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064500.

The product of its digits is 4800, while the sum is 28.

The spelling of 25422113251 in words is "twenty-five billion, four hundred twenty-two million, one hundred thirteen thousand, two hundred fifty-one".