20825372 has 6 divisors (see below), whose sum is σ = 36444408. Its totient is φ = 10412684.

The previous prime is 20825359. The next prime is 20825381. The reversal of 20825372 is 27352802.

It is a super-2 number, since 2×20825372² = 867392237876768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2603168 + ... + 2603175.

It is an arithmetic number, because the mean of its divisors is an integer number (6074068).

Almost surely, 2^20825372 is an apocalyptic number.

It is an amenable number.

20825372 is a deficient number, since it is larger than the sum of its proper divisors (15619036).

20825372 is a wasteful number, since it uses less digits than its factorization.

20825372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5206347 (or 5206345 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20825372 is about 4563.4824421707. The cubic root of 20825372 is about 275.1255492842.

The spelling of 20825372 in words is "twenty million, eight hundred twenty-five thousand, three hundred seventy-two".