25431212 has 12 divisors (see below), whose sum is σ = 44553936. Its totient is φ = 12701520.

The previous prime is 25431209. The next prime is 25431221. The reversal of 25431212 is 21213452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262 + ... + 7242.

It is an arithmetic number, because the mean of its divisors is an integer number (3712828).

Almost surely, 2^25431212 is an apocalyptic number.

It is an amenable number.

25431212 is a deficient number, since it is larger than the sum of its proper divisors (19122724).

25431212 is a wasteful number, since it uses less digits than its factorization.

25431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7048 (or 7046 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 25431212 is about 5042.9368427534. The cubic root of 25431212 is about 294.0733616115.

Adding to 25431212 its reverse (21213452), we get a palindrome (46644664).

The spelling of 25431212 in words is "twenty-five million, four hundred thirty-one thousand, two hundred twelve".