25620189 has 24 divisors (see below), whose sum is σ = 41833440. Its totient is φ = 13868064.

The previous prime is 25620149. The next prime is 25620193. The reversal of 25620189 is 98102652.

It is not a de Polignac number, because 25620189 - 2¹¹ = 25618141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1794 + ... + 7379.

It is an arithmetic number, because the mean of its divisors is an integer number (1743060).

Almost surely, 2^25620189 is an apocalyptic number.

It is an amenable number.

25620189 is a deficient number, since it is larger than the sum of its proper divisors (16213251).

25620189 is a wasteful number, since it uses less digits than its factorization.

25620189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9209 (or 9202 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 25620189 is about 5061.6389638140. The cubic root of 25620189 is about 294.7999754834.

The spelling of 25620189 in words is "twenty-five million, six hundred twenty thousand, one hundred eighty-nine".