25512405241 has 4 divisors (see below), whose sum is σ = 25557720912. Its totient is φ = 25467089572.

The previous prime is 25512405229. The next prime is 25512405283. The reversal of 25512405241 is 14250421552.

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 25512405241 - 2¹⁷ = 25512274169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25512405641) 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, 22656991 + ... + 22658116.

It is an arithmetic number, because the mean of its divisors is an integer number (6389430228).

Almost surely, 2^25512405241 is an apocalyptic number.

It is an amenable number.

25512405241 is a deficient number, since it is larger than the sum of its proper divisors (45315671).

25512405241 is an equidigital number, since it uses as much as digits as its factorization.

25512405241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45315670.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 25512405241 its reverse (14250421552), we get a palindrome (39762826793).

The spelling of 25512405241 in words is "twenty-five billion, five hundred twelve million, four hundred five thousand, two hundred forty-one".