25783290 has 48 divisors (see below), whose sum is σ = 72196488. Its totient is φ = 6346368.

The previous prime is 25783259. The next prime is 25783327. The reversal of 25783290 is 9238752.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10361961 + 15421329 = 3219^2 + 3927^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9849 + ... + 12188.

Almost surely, 2^25783290 is an apocalyptic number.

25783290 is an abundant number, since it is smaller than the sum of its proper divisors (46413198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25783290 is a wasteful number, since it uses less digits than its factorization.

25783290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22063 (or 22060 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 25783290 is about 5077.7248842370. The cubic root of 25783290 is about 295.4242292437.

The spelling of 25783290 in words is "twenty-five million, seven hundred eighty-three thousand, two hundred ninety".