25695652320 has 432 divisors, whose sum is σ = 100551879792. Its totient is φ = 5952061440.

The previous prime is 25695652313. The next prime is 25695652321. The reversal of 25695652320 is 2325659652.

25695652320 is a `hidden beast` number, since 2 + 5 + 69 + 565 + 2 + 3 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25695652321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4134015 + ... + 4140225.

It is an arithmetic number, because the mean of its divisors is an integer number (232758981).

Almost surely, 2^25695652320 is an apocalyptic number.

25695652320 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 25695652320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50275939896).

25695652320 is an abundant number, since it is smaller than the sum of its proper divisors (74856227472).

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

25695652320 is a wasteful number, since it uses less digits than its factorization.

25695652320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6275 (or 6251 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 25695652320 in words is "twenty-five billion, six hundred ninety-five million, six hundred fifty-two thousand, three hundred twenty".