25879421 has 8 divisors (see below), whose sum is σ = 26553120. Its totient is φ = 25209072.

The previous prime is 25879417. The next prime is 25879459. The reversal of 25879421 is 12497852.

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 25879421 - 2² = 25879417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25879411) 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, 23675 + ... + 24743.

It is an arithmetic number, because the mean of its divisors is an integer number (3319140).

Almost surely, 2^25879421 is an apocalyptic number.

It is an amenable number.

25879421 is a deficient number, since it is larger than the sum of its proper divisors (673699).

25879421 is a wasteful number, since it uses less digits than its factorization.

25879421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675.

The product of its digits is 40320, while the sum is 38.

The square root of 25879421 is about 5087.1820293754. The cubic root of 25879421 is about 295.7909293363.

The spelling of 25879421 in words is "twenty-five million, eight hundred seventy-nine thousand, four hundred twenty-one".