25980190 has 32 divisors (see below), whose sum is σ = 48190464. Its totient is φ = 10079520.

The previous prime is 25980181. The next prime is 25980191. The reversal of 25980190 is 9108952.

It is a super-2 number, since 2×25980190² = 1349940544872200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25980191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78325 + ... + 78655.

It is an arithmetic number, because the mean of its divisors is an integer number (1505952).

Almost surely, 2^25980190 is an apocalyptic number.

25980190 is a deficient number, since it is larger than the sum of its proper divisors (22210274).

25980190 is a wasteful number, since it uses less digits than its factorization.

25980190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 25980190 is about 5097.0766131185. The cubic root of 25980190 is about 296.1743479197.

The spelling of 25980190 in words is "twenty-five million, nine hundred eighty thousand, one hundred ninety".