20625528 has 64 divisors (see below), whose sum is σ = 64293120. Its totient is φ = 5356800.

The previous prime is 20625499. The next prime is 20625529. The reversal of 20625528 is 82552602.

It is a junction number, because it is equal to n+sod(n) for n = 20625495 and 20625504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625529) 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 15 ways as a sum of consecutive naturals, for example, 3733 + ... + 7428.

It is an arithmetic number, because the mean of its divisors is an integer number (1004580).

Almost surely, 2^20625528 is an apocalyptic number.

20625528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20625528 is an abundant number, since it is smaller than the sum of its proper divisors (43667592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20625528 is a wasteful number, since it uses less digits than its factorization.

20625528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11188 (or 11184 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 20625528 is about 4541.5336616610. The cubic root of 20625528 is about 274.2426677858.

It can be divided in two parts, 20625 and 528, that multiplied together give a square (10890000 = 3300²).

The spelling of 20625528 in words is "twenty million, six hundred twenty-five thousand, five hundred twenty-eight".