25318478460 has 48 divisors (see below), whose sum is σ = 77336445312. Its totient is φ = 6137812800.

The previous prime is 25318478417. The next prime is 25318478509. The reversal of 25318478460 is 6487481352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19180006 + ... + 19181325.

It is an arithmetic number, because the mean of its divisors is an integer number (1611175944).

Almost surely, 2^25318478460 is an apocalyptic number.

25318478460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25318478460 is an abundant number, since it is smaller than the sum of its proper divisors (52017966852).

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

25318478460 is a wasteful number, since it uses less digits than its factorization.

25318478460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38361354 (or 38361352 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 25318478460 in words is "twenty-five billion, three hundred eighteen million, four hundred seventy-eight thousand, four hundred sixty".