25421798 has 8 divisors (see below), whose sum is σ = 39362880. Its totient is φ = 12300840.

The previous prime is 25421797. The next prime is 25421813. The reversal of 25421798 is 89712452.

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 (25421797) 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, 204953 + ... + 205076.

It is an arithmetic number, because the mean of its divisors is an integer number (4920360).

Almost surely, 2^25421798 is an apocalyptic number.

25421798 is a deficient number, since it is larger than the sum of its proper divisors (13941082).

25421798 is a wasteful number, since it uses less digits than its factorization.

25421798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410062.

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

The square root of 25421798 is about 5042.0033716768. The cubic root of 25421798 is about 294.0370709267.

The spelling of 25421798 in words is "twenty-five million, four hundred twenty-one thousand, seven hundred ninety-eight".