25404830 has 64 divisors (see below), whose sum is σ = 52690176. Its totient is φ = 8736000.

The previous prime is 25404809. The next prime is 25404839. The reversal of 25404830 is 3840452.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 25404830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25404839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193865 + ... + 193995.

It is an arithmetic number, because the mean of its divisors is an integer number (823284).

Almost surely, 2^25404830 is an apocalyptic number.

25404830 is an abundant number, since it is smaller than the sum of its proper divisors (27285346).

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

25404830 is a wasteful number, since it uses less digits than its factorization.

25404830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 25404830 is about 5040.3204263221. The cubic root of 25404830 is about 293.9716371670.

The spelling of 25404830 in words is "twenty-five million, four hundred four thousand, eight hundred thirty".