25223430 has 32 divisors (see below), whose sum is σ = 60735744. Its totient is φ = 6704096.

The previous prime is 25223411. The next prime is 25223447. The reversal of 25223430 is 3432252.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25223397 and 25223406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9199 + ... + 11621.

It is an arithmetic number, because the mean of its divisors is an integer number (1897992).

Almost surely, 2^25223430 is an apocalyptic number.

25223430 is an abundant number, since it is smaller than the sum of its proper divisors (35512314).

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

25223430 is a wasteful number, since it uses less digits than its factorization.

25223430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780.

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

The square root of 25223430 is about 5022.2933008736. The cubic root of 25223430 is about 293.2702759888.

Adding to 25223430 its reverse (3432252), we get a palindrome (28655682).

The spelling of 25223430 in words is "twenty-five million, two hundred twenty-three thousand, four hundred thirty".