25320374280 has 256 divisors, whose sum is σ = 87092352000. Its totient is φ = 6538558464.

The previous prime is 25320374279. The next prime is 25320374291. The reversal of 25320374280 is 8247302352.

25320374280 is a `hidden beast` number, since 2 + 5 + 3 + 2 + 0 + 374 + 280 = 666.

It is a super-2 number, since 2×25320374280² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9149457 + ... + 9152223.

It is an arithmetic number, because the mean of its divisors is an integer number (340204500).

Almost surely, 2^25320374280 is an apocalyptic number.

25320374280 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 25320374280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43546176000).

25320374280 is an abundant number, since it is smaller than the sum of its proper divisors (61771977720).

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

25320374280 is a wasteful number, since it uses less digits than its factorization.

25320374280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053 (or 3043 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 25320374280 in words is "twenty-five billion, three hundred twenty million, three hundred seventy-four thousand, two hundred eighty".