25978606 has 8 divisors (see below), whose sum is σ = 40311720. Its totient is φ = 12541368.

The previous prime is 25978591. The next prime is 25978607. The reversal of 25978606 is 60687952.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25978607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223896 + ... + 224011.

It is an arithmetic number, because the mean of its divisors is an integer number (5038965).

Almost surely, 2^25978606 is an apocalyptic number.

25978606 is a deficient number, since it is larger than the sum of its proper divisors (14333114).

25978606 is a wasteful number, since it uses less digits than its factorization.

25978606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447938.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 25978606 is about 5096.9212275647. The cubic root of 25978606 is about 296.1683285936.

The spelling of 25978606 in words is "twenty-five million, nine hundred seventy-eight thousand, six hundred six".