25471468518 has 16 divisors (see below), whose sum is σ = 50982845040. Its totient is φ = 8483838176.

The previous prime is 25471468513. The next prime is 25471468541. The reversal of 25471468518 is 81586417452.

It is a happy 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 (25471468511) 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, 1654533 + ... + 1669856.

It is an arithmetic number, because the mean of its divisors is an integer number (3186427815).

Almost surely, 2^25471468518 is an apocalyptic number.

25471468518 is an abundant number, since it is smaller than the sum of its proper divisors (25511376522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25471468518 is a wasteful number, since it uses less digits than its factorization.

25471468518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325671.

The product of its digits is 2150400, while the sum is 51.

The spelling of 25471468518 in words is "twenty-five billion, four hundred seventy-one million, four hundred sixty-eight thousand, five hundred eighteen".