20562725 has 12 divisors (see below), whose sum is σ = 25739424. Its totient is φ = 16294320.

The previous prime is 20562721. The next prime is 20562733. The reversal of 20562725 is 52726502.

It is not a de Polignac number, because 20562725 - 2² = 20562721 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20562721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1169 + ... + 6518.

It is an arithmetic number, because the mean of its divisors is an integer number (2144952).

Almost surely, 2^20562725 is an apocalyptic number.

20562725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20562725 is a deficient number, since it is larger than the sum of its proper divisors (5176699).

20562725 is a wasteful number, since it uses less digits than its factorization.

20562725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7804 (or 7799 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 20562725 is about 4534.6140960395. The cubic root of 20562725 is about 273.9640361628.

The spelling of 20562725 in words is "twenty million, five hundred sixty-two thousand, seven hundred twenty-five".