25220190 has 32 divisors (see below), whose sum is σ = 63161856. Its totient is φ = 6432800.

The previous prime is 25220183. The next prime is 25220191. The reversal of 25220190 is 9102252.

It is a super-2 number, since 2×25220190² = 1272115967272200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25220191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17586 + ... + 18965.

It is an arithmetic number, because the mean of its divisors is an integer number (1973808).

Almost surely, 2^25220190 is an apocalyptic number.

25220190 is an abundant number, since it is smaller than the sum of its proper divisors (37941666).

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

25220190 is a wasteful number, since it uses less digits than its factorization.

25220190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36584.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 25220190 is about 5021.9707287080. The cubic root of 25220190 is about 293.2577184001.

The spelling of 25220190 in words is "twenty-five million, two hundred twenty thousand, one hundred ninety".