20025090 has 32 divisors (see below), whose sum is σ = 53400960. Its totient is φ = 5339952.

The previous prime is 20025079. The next prime is 20025119. The reversal of 20025090 is 9052002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36814 + ... + 37353.

It is an arithmetic number, because the mean of its divisors is an integer number (1668780).

Almost surely, 2^20025090 is an apocalyptic number.

20025090 is an abundant number, since it is smaller than the sum of its proper divisors (33375870).

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

20025090 is a wasteful number, since it uses less digits than its factorization.

20025090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74183 (or 74177 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 20025090 is about 4474.9402230644. The cubic root of 20025090 is about 271.5552221240. Note that the first 3 decimals are identical.

Adding to 20025090 its reverse (9052002), we get a palindrome (29077092).

The spelling of 20025090 in words is "twenty million, twenty-five thousand, ninety".