20654725 has 36 divisors (see below), whose sum is σ = 32109924. Its totient is φ = 13063680.

The previous prime is 20654701. The next prime is 20654747. The reversal of 20654725 is 52745602.

It can be written as a sum of positive squares in 6 ways, for example, as 15876 + 20638849 = 126^2 + 4543^2 .

It is not a de Polignac number, because 20654725 - 2⁹ = 20654213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15277 + ... + 16573.

Almost surely, 2^20654725 is an apocalyptic number.

20654725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20654725 is a deficient number, since it is larger than the sum of its proper divisors (11455199).

20654725 is a wasteful number, since it uses less digits than its factorization.

20654725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 20654725 is about 4544.7469676540. The cubic root of 20654725 is about 274.3720105423.

The spelling of 20654725 in words is "twenty million, six hundred fifty-four thousand, seven hundred twenty-five".