20736525 has 12 divisors (see below), whose sum is σ = 34284512. Its totient is φ = 11059440.

The previous prime is 20736511. The next prime is 20736577. The reversal of 20736525 is 52563702.

It is not a de Polignac number, because 20736525 - 2⁴ = 20736509 is a prime.

It is a super-3 number, since 3×20736525³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20736492 and 20736501.

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, 138169 + ... + 138318.

Almost surely, 2^20736525 is an apocalyptic number.

20736525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20736525 is a deficient number, since it is larger than the sum of its proper divisors (13547987).

20736525 is a wasteful number, since it uses less digits than its factorization.

20736525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276500 (or 276495 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 20736525 is about 4553.7374759641. The cubic root of 20736525 is about 274.7337367695.

The spelling of 20736525 in words is "twenty million, seven hundred thirty-six thousand, five hundred twenty-five".