20732625 has 32 divisors (see below), whose sum is σ = 38338560. Its totient is φ = 11055600.

The previous prime is 20732611. The next prime is 20732627. The reversal of 20732625 is 52623702.

20732625 is a `hidden beast` number, since 2 + 0 + 7 + 32 + 625 = 666.

20732625 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 20732625 - 2²¹ = 18635473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (20732627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304 + ... + 6446.

It is an arithmetic number, because the mean of its divisors is an integer number (1198080).

Almost surely, 2^20732625 is an apocalyptic number.

20732625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20732625 is a deficient number, since it is larger than the sum of its proper divisors (17605935).

20732625 is an equidigital number, since it uses as much as digits as its factorization.

20732625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6167 (or 6151 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20732625 is about 4553.3092361490. The cubic root of 20732625 is about 274.7165122707.

The spelling of 20732625 in words is "twenty million, seven hundred thirty-two thousand, six hundred twenty-five".