25163642430 has 96 divisors (see below), whose sum is σ = 68428039680. Its totient is φ = 6403700160.

The previous prime is 25163642411. The next prime is 25163642447. The reversal of 25163642430 is 3424636152.

25163642430 is a `hidden beast` number, since 2 + 5 + 1 + 6 + 3 + 642 + 4 + 3 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 894885 + ... + 922575.

It is an arithmetic number, because the mean of its divisors is an integer number (712792080).

Almost surely, 2^25163642430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25163642430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34214019840).

25163642430 is an abundant number, since it is smaller than the sum of its proper divisors (43264397250).

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

25163642430 is a wasteful number, since it uses less digits than its factorization.

25163642430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28166 (or 28163 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 25163642430 in words is "twenty-five billion, one hundred sixty-three million, six hundred forty-two thousand, four hundred thirty".