20725356 has 12 divisors (see below), whose sum is σ = 48359192. Its totient is φ = 6908448.

The previous prime is 20725339. The next prime is 20725361. The reversal of 20725356 is 65352702.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863545 + ... + 863568.

Almost surely, 2^20725356 is an apocalyptic number.

It is an amenable number.

20725356 is an abundant number, since it is smaller than the sum of its proper divisors (27633836).

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

20725356 is a wasteful number, since it uses less digits than its factorization.

20725356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727120 (or 1727118 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 20725356 is about 4552.5109555058. The cubic root of 20725356 is about 274.6844026890.

The spelling of 20725356 in words is "twenty million, seven hundred twenty-five thousand, three hundred fifty-six".