20625199 has 16 divisors (see below), whose sum is σ = 25767936. Its totient is φ = 16099200.

The previous prime is 20625197. The next prime is 20625217. The reversal of 20625199 is 99152602.

It is a cyclic number.

It is not a de Polignac number, because 20625199 - 2¹ = 20625197 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 894 + ... + 6484.

It is an arithmetic number, because the mean of its divisors is an integer number (1610496).

Almost surely, 2^20625199 is an apocalyptic number.

20625199 is a deficient number, since it is larger than the sum of its proper divisors (5142737).

20625199 is a wasteful number, since it uses less digits than its factorization.

20625199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 20625199 is about 4541.4974402723. The cubic root of 20625199 is about 274.2412096200.

The spelling of 20625199 in words is "twenty million, six hundred twenty-five thousand, one hundred ninety-nine".