25989394 has 8 divisors (see below), whose sum is σ = 40328460. Its totient is φ = 12546576.

The previous prime is 25989391. The next prime is 25989401. The reversal of 25989394 is 49398952.

It can be written as a sum of positive squares in 2 ways, for example, as 24750625 + 1238769 = 4975^2 + 1113^2 .

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

It is not an unprimeable number, because it can be changed into a prime (25989391) 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, 223989 + ... + 224104.

Almost surely, 2^25989394 is an apocalyptic number.

25989394 is a deficient number, since it is larger than the sum of its proper divisors (14339066).

25989394 is a wasteful number, since it uses less digits than its factorization.

25989394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448124.

The product of its digits is 699840, while the sum is 49.

The square root of 25989394 is about 5097.9794036461. The cubic root of 25989394 is about 296.2093190117.

The spelling of 25989394 in words is "twenty-five million, nine hundred eighty-nine thousand, three hundred ninety-four".