25513315423 has 8 divisors (see below), whose sum is σ = 25745803776. Its totient is φ = 25281399000.

The previous prime is 25513315411. The next prime is 25513315433. The reversal of 25513315423 is 32451331552.

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 25513315423 - 2¹³ = 25513307231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25513315433) 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, 53103 + ... + 232048.

It is an arithmetic number, because the mean of its divisors is an integer number (3218225472).

Almost surely, 2^25513315423 is an apocalyptic number.

25513315423 is a deficient number, since it is larger than the sum of its proper divisors (232488353).

25513315423 is a wasteful number, since it uses less digits than its factorization.

25513315423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285965.

The product of its digits is 54000, while the sum is 34.

Adding to 25513315423 its reverse (32451331552), we get a palindrome (57964646975).

The spelling of 25513315423 in words is "twenty-five billion, five hundred thirteen million, three hundred fifteen thousand, four hundred twenty-three".