25311982 has 8 divisors (see below), whose sum is σ = 38148552. Its totient is φ = 12595800.

The previous prime is 25311967. The next prime is 25312019. The reversal of 25311982 is 28911352.

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

It is a congruent number.

It is an unprimeable number.

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, 29569 + ... + 30412.

It is an arithmetic number, because the mean of its divisors is an integer number (4768569).

Almost surely, 2^25311982 is an apocalyptic number.

25311982 is a deficient number, since it is larger than the sum of its proper divisors (12836570).

25311982 is a wasteful number, since it uses less digits than its factorization.

25311982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60194.

The product of its digits is 4320, while the sum is 31.

The square root of 25311982 is about 5031.1014698573. The cubic root of 25311982 is about 293.6130702084.

The spelling of 25311982 in words is "twenty-five million, three hundred eleven thousand, nine hundred eighty-two".