25939390 has 8 divisors (see below), whose sum is σ = 46690920. Its totient is φ = 10375752.

The previous prime is 25939379. The next prime is 25939411. The reversal of 25939390 is 9393952.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296960 + ... + 1296979.

It is an arithmetic number, because the mean of its divisors is an integer number (5836365).

Almost surely, 2^25939390 is an apocalyptic number.

25939390 is a deficient number, since it is larger than the sum of its proper divisors (20751530).

25939390 is a wasteful number, since it uses less digits than its factorization.

25939390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593946.

The product of its (nonzero) digits is 65610, while the sum is 40.

The square root of 25939390 is about 5093.0727463880. The cubic root of 25939390 is about 296.0192265938.

The spelling of 25939390 in words is "twenty-five million, nine hundred thirty-nine thousand, three hundred ninety".