25230523 has 4 divisors (see below), whose sum is σ = 25316928. Its totient is φ = 25144120.

The previous prime is 25230511. The next prime is 25230547. The reversal of 25230523 is 32503252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25230523 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25230494 and 25230503.

It is not an unprimeable number, because it can be changed into a prime (25230503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42763 + ... + 43348.

It is an arithmetic number, because the mean of its divisors is an integer number (6329232).

Almost surely, 2^25230523 is an apocalyptic number.

25230523 is a deficient number, since it is larger than the sum of its proper divisors (86405).

25230523 is an equidigital number, since it uses as much as digits as its factorization.

25230523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86404.

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

The square root of 25230523 is about 5022.9994027473. Note that the first 3 decimals coincide. The cubic root of 25230523 is about 293.2977632776.

Adding to 25230523 its reverse (32503252), we get a palindrome (57733775).

The spelling of 25230523 in words is "twenty-five million, two hundred thirty thousand, five hundred twenty-three".