20425372 has 12 divisors (see below), whose sum is σ = 38993976. Its totient is φ = 9284240.

The previous prime is 20425343. The next prime is 20425397. The reversal of 20425372 is 27352402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232063 + ... + 232150.

It is an arithmetic number, because the mean of its divisors is an integer number (3249498).

Almost surely, 2^20425372 is an apocalyptic number.

20425372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20425372 is a deficient number, since it is larger than the sum of its proper divisors (18568604).

20425372 is a wasteful number, since it uses less digits than its factorization.

20425372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464228 (or 464226 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 20425372 is about 4519.4437710851. The cubic root of 20425372 is about 273.3526729657.

Adding to 20425372 its reverse (27352402), we get a palindrome (47777774).

The spelling of 20425372 in words is "twenty million, four hundred twenty-five thousand, three hundred seventy-two".