25223530 has 16 divisors (see below), whose sum is σ = 45609984. Its totient is φ = 10043280.

The previous prime is 25223509. The next prime is 25223551. The reversal of 25223530 is 3532252.

It is an interprime number because it is at equal distance from previous prime (25223509) and next prime (25223551).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3426 + ... + 7885.

It is an arithmetic number, because the mean of its divisors is an integer number (2850624).

Almost surely, 2^25223530 is an apocalyptic number.

25223530 is a deficient number, since it is larger than the sum of its proper divisors (20386454).

25223530 is a wasteful number, since it uses less digits than its factorization.

25223530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11541.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 25223530 is about 5022.3032564751. The cubic root of 25223530 is about 293.2706635516.

Adding to 25223530 its reverse (3532252), we get a palindrome (28755782).

The spelling of 25223530 in words is "twenty-five million, two hundred twenty-three thousand, five hundred thirty".