25196728320 has 624 divisors, whose sum is σ = 93166661952. Its totient is φ = 6529351680.

The previous prime is 25196728301. The next prime is 25196728327. The reversal of 25196728320 is 2382769152.

25196728320 is a `hidden beast` number, since 251 + 9 + 6 + 72 + 8 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (25196728327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 303574999 + ... + 303575081.

It is an arithmetic number, because the mean of its divisors is an integer number (149305548).

Almost surely, 2^25196728320 is an apocalyptic number.

25196728320 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 25196728320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46583330976).

25196728320 is an abundant number, since it is smaller than the sum of its proper divisors (67969933632).

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

25196728320 is an frugal number, since it uses more digits than its factorization.

25196728320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 25196728320 in words is "twenty-five billion, one hundred ninety-six million, seven hundred twenty-eight thousand, three hundred twenty".