25652130840 has 256 divisors, whose sum is σ = 97834291200. Its totient is φ = 5856634368.

The previous prime is 25652130787. The next prime is 25652130859. The reversal of 25652130840 is 4803125652.

25652130840 is a `hidden beast` number, since 2 + 56 + 521 + 3 + 0 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25652130795 and 25652130804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10030842 + ... + 10033398.

It is an arithmetic number, because the mean of its divisors is an integer number (382165200).

Almost surely, 2^25652130840 is an apocalyptic number.

25652130840 is a gapful number since it is divisible by the number (20) 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 25652130840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48917145600).

25652130840 is an abundant number, since it is smaller than the sum of its proper divisors (72182160360).

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

25652130840 is a wasteful number, since it uses less digits than its factorization.

25652130840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911 (or 3901 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 25652130840 in words is "twenty-five billion, six hundred fifty-two million, one hundred thirty thousand, eight hundred forty".