25560818712 has 648 divisors, whose sum is σ = 90222956460. Its totient is φ = 6479066880.

The previous prime is 25560818663. The next prime is 25560818749. The reversal of 25560818712 is 21781806552.

25560818712 is a `hidden beast` number, since 2 + 5 + 560 + 8 + 1 + 87 + 1 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 161 ways as a sum of consecutive naturals, for example, 1111339933 + ... + 1111339955.

Almost surely, 2^25560818712 is an apocalyptic number.

25560818712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25560818712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45111478230).

25560818712 is an abundant number, since it is smaller than the sum of its proper divisors (64662137748).

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

25560818712 is a wasteful number, since it uses less digits than its factorization.

25560818712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 25560818712 in words is "twenty-five billion, five hundred sixty million, eight hundred eighteen thousand, seven hundred twelve".