20225392 has 60 divisors (see below), whose sum is σ = 44594368. Its totient is φ = 8870400.

The previous prime is 20225371. The next prime is 20225419. The reversal of 20225392 is 29352202.

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, 59848 + ... + 60184.

Almost surely, 2^20225392 is an apocalyptic number.

20225392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20225392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22297184).

20225392 is an abundant number, since it is smaller than the sum of its proper divisors (24368976).

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

20225392 is a wasteful number, since it uses less digits than its factorization.

20225392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20225392 is about 4497.2649466092. The cubic root of 20225392 is about 272.4576350266.

Adding to 20225392 its reverse (29352202), we get a palindrome (49577594).

The spelling of 20225392 in words is "twenty million, two hundred twenty-five thousand, three hundred ninety-two".