25531152241 has 4 divisors (see below), whose sum is σ = 29178459712. Its totient is φ = 21883844772.

The previous prime is 25531152239. The next prime is 25531152247. The reversal of 25531152241 is 14225113552.

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 25531152241 - 2¹ = 25531152239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25531152247) 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, 1823653725 + ... + 1823653738.

It is an arithmetic number, because the mean of its divisors is an integer number (7294614928).

Almost surely, 2^25531152241 is an apocalyptic number.

It is an amenable number.

25531152241 is a deficient number, since it is larger than the sum of its proper divisors (3647307471).

25531152241 is an equidigital number, since it uses as much as digits as its factorization.

25531152241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647307470.

The product of its digits is 12000, while the sum is 31.

Adding to 25531152241 its reverse (14225113552), we get a palindrome (39756265793).

The spelling of 25531152241 in words is "twenty-five billion, five hundred thirty-one million, one hundred fifty-two thousand, two hundred forty-one".