25430304 has 24 divisors (see below), whose sum is σ = 66754800. Its totient is φ = 8476736.

The previous prime is 25430297. The next prime is 25430309. The reversal of 25430304 is 40303452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (25430309) 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, 132354 + ... + 132545.

It is an arithmetic number, because the mean of its divisors is an integer number (2781450).

Almost surely, 2^25430304 is an apocalyptic number.

25430304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25430304 is an abundant number, since it is smaller than the sum of its proper divisors (41324496).

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

25430304 is a wasteful number, since it uses less digits than its factorization.

25430304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264912 (or 264904 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 25430304 is about 5042.8468150441. The cubic root of 25430304 is about 294.0698616893.

Adding to 25430304 its reverse (40303452), we get a palindrome (65733756).

The spelling of 25430304 in words is "twenty-five million, four hundred thirty thousand, three hundred four".