25445074320 has 280 divisors, whose sum is σ = 90596094336. Its totient is φ = 6640268544.

The previous prime is 25445074297. The next prime is 25445074357. The reversal of 25445074320 is 2347054452.

25445074320 is a `hidden beast` number, since 2 + 544 + 50 + 7 + 43 + 20 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2736399 + ... + 2745681.

Almost surely, 2^25445074320 is an apocalyptic number.

25445074320 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 25445074320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45298047168).

25445074320 is an abundant number, since it is smaller than the sum of its proper divisors (65151020016).

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

25445074320 is an equidigital number, since it uses as much as digits as its factorization.

25445074320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9361 (or 9340 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 36.

The spelling of 25445074320 in words is "twenty-five billion, four hundred forty-five million, seventy-four thousand, three hundred twenty".