25020345456 has 30 divisors (see below), whose sum is σ = 70022217200. Its totient is φ = 8340115104.

The previous prime is 25020345451. The next prime is 25020345463. The reversal of 25020345456 is 65454302052.

25020345456 is a `hidden beast` number, since 250 + 20 + 345 + 45 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25020345456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25020345451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86876056 + ... + 86876343.

Almost surely, 2^25020345456 is an apocalyptic number.

It is an amenable number.

25020345456 is an abundant number, since it is smaller than the sum of its proper divisors (45001871744).

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

25020345456 is a wasteful number, since it uses less digits than its factorization.

25020345456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173752413 (or 173752404 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 25020345456 in words is "twenty-five billion, twenty million, three hundred forty-five thousand, four hundred fifty-six".