25115312641 has 8 divisors (see below), whose sum is σ = 25767673344. Its totient is φ = 24464846880.

The previous prime is 25115312639. The next prime is 25115312647. The reversal of 25115312641 is 14621351152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25115312641 - 2¹ = 25115312639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25115312647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446865 + ... + 499918.

It is an arithmetic number, because the mean of its divisors is an integer number (3220959168).

Almost surely, 2^25115312641 is an apocalyptic number.

It is an amenable number.

25115312641 is a deficient number, since it is larger than the sum of its proper divisors (652360703).

25115312641 is an equidigital number, since it uses as much as digits as its factorization.

25115312641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947471.

The product of its digits is 7200, while the sum is 31.

Adding to 25115312641 its reverse (14621351152), we get a palindrome (39736663793).

The spelling of 25115312641 in words is "twenty-five billion, one hundred fifteen million, three hundred twelve thousand, six hundred forty-one".