25312573551220 has 48 divisors (see below), whose sum is σ = 55470432503808. Its totient is φ = 9684307888640.

The previous prime is 25312573551143. The next prime is 25312573551247. The reversal of 25312573551220 is 2215537521352.

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, 7500972 + ... + 10338748.

It is an arithmetic number, because the mean of its divisors is an integer number (1155634010496).

Almost surely, 2^{25312573551220} is an apocalyptic number.

25312573551220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25312573551220 is an abundant number, since it is smaller than the sum of its proper divisors (30157858952588).

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

25312573551220 is a wasteful number, since it uses less digits than its factorization.

25312573551220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857200 (or 2857198 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 25312573551220 in words is "twenty-five trillion, three hundred twelve billion, five hundred seventy-three million, five hundred fifty-one thousand, two hundred twenty".