25640794 has 16 divisors (see below), whose sum is σ = 40824000. Its totient is φ = 12036544.

The previous prime is 25640789. The next prime is 25640807. The reversal of 25640794 is 49704652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19737 + ... + 20995.

It is an arithmetic number, because the mean of its divisors is an integer number (2551500).

Almost surely, 2^25640794 is an apocalyptic number.

25640794 is a deficient number, since it is larger than the sum of its proper divisors (15183206).

25640794 is a wasteful number, since it uses less digits than its factorization.

25640794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 25640794 is about 5063.6739626481. The cubic root of 25640794 is about 294.8789851242.

The spelling of 25640794 in words is "twenty-five million, six hundred forty thousand, seven hundred ninety-four".