25213430 has 16 divisors (see below), whose sum is σ = 49510224. Its totient is φ = 9168480.

The previous prime is 25213427. The next prime is 25213453. The reversal of 25213430 is 3431252.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 114497 + ... + 114716.

It is an arithmetic number, because the mean of its divisors is an integer number (3094389).

Almost surely, 2^25213430 is an apocalyptic number.

25213430 is a deficient number, since it is larger than the sum of its proper divisors (24296794).

25213430 is a wasteful number, since it uses less digits than its factorization.

25213430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229231.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 25213430 is about 5021.2976410486. The cubic root of 25213430 is about 293.2315145356.

Adding to 25213430 its reverse (3431252), we get a palindrome (28644682).

The spelling of 25213430 in words is "twenty-five million, two hundred thirteen thousand, four hundred thirty".