25994779 has 8 divisors (see below), whose sum is σ = 26743248. Its totient is φ = 25251840.

The previous prime is 25994767. The next prime is 25994783. The reversal of 25994779 is 97749952.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25994779 - 2⁷ = 25994651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25994879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9304 + ... + 11770.

It is an arithmetic number, because the mean of its divisors is an integer number (3342906).

Almost surely, 2^25994779 is an apocalyptic number.

25994779 is a deficient number, since it is larger than the sum of its proper divisors (748469).

25994779 is a wasteful number, since it uses less digits than its factorization.

25994779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765.

The product of its digits is 1428840, while the sum is 52.

The square root of 25994779 is about 5098.5075267180. The cubic root of 25994779 is about 296.2297757800.

The spelling of 25994779 in words is "twenty-five million, nine hundred ninety-four thousand, seven hundred seventy-nine".