25223529 has 16 divisors (see below), whose sum is σ = 36574848. Its totient is φ = 15397632.

The previous prime is 25223509. The next prime is 25223551. The reversal of 25223529 is 92532252.

It is not a de Polignac number, because 25223529 - 2⁸ = 25223273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25223496 and 25223505.

It is not an unprimeable number, because it can be changed into a prime (25223509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4797 + ... + 8570.

It is an arithmetic number, because the mean of its divisors is an integer number (2285928).

Almost surely, 2^25223529 is an apocalyptic number.

It is an amenable number.

25223529 is a deficient number, since it is larger than the sum of its proper divisors (11351319).

25223529 is a wasteful number, since it uses less digits than its factorization.

25223529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13424.

The product of its digits is 10800, while the sum is 30.

The square root of 25223529 is about 5022.3031569191. The cubic root of 25223529 is about 293.2706596760.

It can be divided in two parts, 25223 and 529, that added together give a palindrome (25752).

The spelling of 25223529 in words is "twenty-five million, two hundred twenty-three thousand, five hundred twenty-nine".