25421035051 has 6 divisors (see below), whose sum is σ = 27004352420. Its totient is φ = 23925679776.

The previous prime is 25421035007. The next prime is 25421035067. The reversal of 25421035051 is 15053012452.

It is not a de Polignac number, because 25421035051 - 2⁷ = 25421034923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25421035091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43980741 + ... + 43981318.

Almost surely, 2^25421035051 is an apocalyptic number.

25421035051 is a deficient number, since it is larger than the sum of its proper divisors (1583317369).

25421035051 is an equidigital number, since it uses as much as digits as its factorization.

25421035051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87962093 (or 87962076 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 25421035051 in words is "twenty-five billion, four hundred twenty-one million, thirty-five thousand, fifty-one".