25911982 has 8 divisors (see below), whose sum is σ = 39448296. Its totient is φ = 12762552.

The previous prime is 25911979. The next prime is 25911983. The reversal of 25911982 is 28911952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25911982² = 1342861622336648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25911983) 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 3 ways as a sum of consecutive naturals, for example, 96553 + ... + 96820.

It is an arithmetic number, because the mean of its divisors is an integer number (4931037).

Almost surely, 2^25911982 is an apocalyptic number.

25911982 is a deficient number, since it is larger than the sum of its proper divisors (13536314).

25911982 is a wasteful number, since it uses less digits than its factorization.

25911982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193442.

The product of its digits is 12960, while the sum is 37.

The square root of 25911982 is about 5090.3813216693. The cubic root of 25911982 is about 295.9149302041.

The spelling of 25911982 in words is "twenty-five million, nine hundred eleven thousand, nine hundred eighty-two".