21825925696 has 63 divisors (see below), whose sum is σ = 44198553081. Its totient is φ = 10693722624.

The previous prime is 21825925669. The next prime is 21825925729. The reversal of 21825925696 is 69652952812.

The square root of 21825925696 is 147736.

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

It can be written as a sum of positive squares in only one way, i.e., 139240000 + 21686685696 = 11800^2 + 147264^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69731236 + ... + 69731548.

Almost surely, 2^21825925696 is an apocalyptic number.

21825925696 is the 147736-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21825925696

21825925696 is an abundant number, since it is smaller than the sum of its proper divisors (22372627385).

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

21825925696 is an frugal number, since it uses more digits than its factorization.

21825925696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 374 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 55.

The spelling of 21825925696 in words is "twenty-one billion, eight hundred twenty-five million, nine hundred twenty-five thousand, six hundred ninety-six".