25449994 has 8 divisors (see below), whose sum is σ = 39491460. Its totient is φ = 12286176.

The previous prime is 25449989. The next prime is 25449997. The reversal of 25449994 is 49994452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24157225 + 1292769 = 4915^2 + 1137^2 .

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 (25449997) 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, 219339 + ... + 219454.

Almost surely, 2^25449994 is an apocalyptic number.

25449994 is a deficient number, since it is larger than the sum of its proper divisors (14041466).

25449994 is a wasteful number, since it uses less digits than its factorization.

25449994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438824.

The product of its digits is 466560, while the sum is 46.

The square root of 25449994 is about 5044.7987075799. The cubic root of 25449994 is about 294.1457389027.

The spelling of 25449994 in words is "twenty-five million, four hundred forty-nine thousand, nine hundred ninety-four".