25430812 has 18 divisors (see below), whose sum is σ = 48918464. Its totient is φ = 11559240.

The previous prime is 25430809. The next prime is 25430813. The reversal of 25430812 is 21803452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25430813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25788 + ... + 26755.

Almost surely, 2^25430812 is an apocalyptic number.

25430812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25430812 is a deficient number, since it is larger than the sum of its proper divisors (23487652).

25430812 is a wasteful number, since it uses less digits than its factorization.

25430812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52569 (or 52556 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 25430812 is about 5042.8971831676. The cubic root of 25430812 is about 294.0718198058.

The spelling of 25430812 in words is "twenty-five million, four hundred thirty thousand, eight hundred twelve".