20625190 has 8 divisors (see below), whose sum is σ = 37125360. Its totient is φ = 8250072.

The previous prime is 20625179. The next prime is 20625191. The reversal of 20625190 is 9152602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20625190² = 850796925072200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031250 + ... + 1031269.

It is an arithmetic number, because the mean of its divisors is an integer number (4640670).

Almost surely, 2^20625190 is an apocalyptic number.

20625190 is a deficient number, since it is larger than the sum of its proper divisors (16500170).

20625190 is a wasteful number, since it uses less digits than its factorization.

20625190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062526.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 20625190 is about 4541.4964494096. The cubic root of 20625190 is about 274.2411697308.

Adding to 20625190 its reverse (9152602), we get a palindrome (29777792).

The spelling of 20625190 in words is "twenty million, six hundred twenty-five thousand, one hundred ninety".