25218075204 has 243 divisors, whose sum is σ = 78656606847. Its totient is φ = 6791643936.

The previous prime is 25218075199. The next prime is 25218075217. The reversal of 25218075204 is 40257081252.

It is a happy number.

The square root of 25218075204 is 158802.

It is a perfect power (a square), and thus also a powerful number.

25218075204 is a `hidden beast` number, since 2 + 52 + 1 + 80 + 7 + 520 + 4 = 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 80 ways as a sum of consecutive naturals, for example, 126723897 + ... + 126724095.

Almost surely, 2^25218075204 is an apocalyptic number.

25218075204 is the 158802-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25218075204

25218075204 is an abundant number, since it is smaller than the sum of its proper divisors (53438531643).

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

25218075204 is a wasteful number, since it uses less digits than its factorization.

25218075204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

Multiplying 25218075204 by its sum of digits (36), we get a square (907850707344 = 952812²).

25218075204 divided by its sum of digits (36) gives a square (700502089 = 26467²).

The spelling of 25218075204 in words is "twenty-five billion, two hundred eighteen million, seventy-five thousand, two hundred four".