25204894720 has 176 divisors, whose sum is σ = 62726630400. Its totient is φ = 9707765760.

The previous prime is 25204894717. The next prime is 25204894721. The reversal of 25204894720 is 2749840252.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25204894721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60154671 + ... + 60155089.

Almost surely, 2^25204894720 is an apocalyptic number.

25204894720 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 25204894720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31363315200).

25204894720 is an abundant number, since it is smaller than the sum of its proper divisors (37521735680).

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

25204894720 is a wasteful number, since it uses less digits than its factorization.

25204894720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 25204894720 in words is "twenty-five billion, two hundred four million, eight hundred ninety-four thousand, seven hundred twenty".