25115463893 has 16 divisors (see below), whose sum is σ = 29883603456. Its totient is φ = 20871079680.

The previous prime is 25115463887. The next prime is 25115463917. The reversal of 25115463893 is 39836451152.

It is a cyclic number.

It is not a de Polignac number, because 25115463893 - 2²⁶ = 25048355029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25115463853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2465453 + ... + 2475618.

It is an arithmetic number, because the mean of its divisors is an integer number (1867725216).

Almost surely, 2^25115463893 is an apocalyptic number.

25115463893 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25115463893 is a deficient number, since it is larger than the sum of its proper divisors (4768139563).

25115463893 is a wasteful number, since it uses less digits than its factorization.

25115463893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4941124.

The product of its digits is 777600, while the sum is 47.

The spelling of 25115463893 in words is "twenty-five billion, one hundred fifteen million, four hundred sixty-three thousand, eight hundred ninety-three".