20725364 has 18 divisors (see below), whose sum is σ = 39867282. Its totient is φ = 9420400.

The previous prime is 20725361. The next prime is 20725373. The reversal of 20725364 is 46352702.

It can be written as a sum of positive squares in only one way, i.e., 12545764 + 8179600 = 3542^2 + 2860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20725361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20927 + ... + 21894.

It is an arithmetic number, because the mean of its divisors is an integer number (2214849).

Almost surely, 2^20725364 is an apocalyptic number.

It is an amenable number.

20725364 is a deficient number, since it is larger than the sum of its proper divisors (19141918).

20725364 is a wasteful number, since it uses less digits than its factorization.

20725364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42847 (or 42834 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 20725364 is about 4552.5118341417. The cubic root of 20725364 is about 274.6844380318.

The spelling of 20725364 in words is "twenty million, seven hundred twenty-five thousand, three hundred sixty-four".