25109982 has 24 divisors (see below), whose sum is σ = 57269160. Its totient is φ = 7929360.

The previous prime is 25109971. The next prime is 25109993. The reversal of 25109982 is 28990152.

It is an interprime number because it is at equal distance from previous prime (25109971) and next prime (25109993).

It is a super-2 number, since 2×25109982² = 1261022392080648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36369 + ... + 37052.

It is an arithmetic number, because the mean of its divisors is an integer number (2386215).

Almost surely, 2^25109982 is an apocalyptic number.

25109982 is an abundant number, since it is smaller than the sum of its proper divisors (32159178).

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

25109982 is a wasteful number, since it uses less digits than its factorization.

25109982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73448 (or 73445 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 25109982 is about 5010.9861304937. The cubic root of 25109982 is about 292.8299323292.

The spelling of 25109982 in words is "twenty-five million, one hundred nine thousand, nine hundred eighty-two".