20595725 has 6 divisors (see below), whose sum is σ = 25538730. Its totient is φ = 16476560.

The previous prime is 20595691. The next prime is 20595739. The reversal of 20595725 is 52759502.

It can be written as a sum of positive squares in 3 ways, for example, as 498436 + 20097289 = 706^2 + 4483^2 .

It is not a de Polignac number, because 20595725 - 2⁸ = 20595469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411890 + ... + 411939.

It is an arithmetic number, because the mean of its divisors is an integer number (4256455).

Almost surely, 2^20595725 is an apocalyptic number.

20595725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20595725 is a deficient number, since it is larger than the sum of its proper divisors (4943005).

20595725 is an equidigital number, since it uses as much as digits as its factorization.

20595725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823839 (or 823834 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 20595725 is about 4538.2513152094. The cubic root of 20595725 is about 274.1105144973.

The spelling of 20595725 in words is "twenty million, five hundred ninety-five thousand, seven hundred twenty-five".