20716525 has 12 divisors (see below), whose sum is σ = 26518144. Its totient is φ = 16038000.

The previous prime is 20716483. The next prime is 20716541. The reversal of 20716525 is 52561702.

It is a de Polignac number, because none of the positive numbers 2^k-20716525 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20716493 and 20716502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12591 + ... + 14140.

Almost surely, 2^20716525 is an apocalyptic number.

20716525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20716525 is a deficient number, since it is larger than the sum of its proper divisors (5801619).

20716525 is a wasteful number, since it uses less digits than its factorization.

20716525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26772 (or 26767 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 20716525 is about 4551.5409478549. The cubic root of 20716525 is about 274.6453831329.

The spelling of 20716525 in words is "twenty million, seven hundred sixteen thousand, five hundred twenty-five".