25308623 has 4 divisors (see below), whose sum is σ = 25318800. Its totient is φ = 25298448.

The previous prime is 25308611. The next prime is 25308637. The reversal of 25308623 is 32680352.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25308623 - 2¹² = 25304527 is a prime.

It is a super-2 number, since 2×25308623² = 1281052796312258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25308653) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1403 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (6329700).

Almost surely, 2^25308623 is an apocalyptic number.

25308623 is a deficient number, since it is larger than the sum of its proper divisors (10177).

25308623 is an equidigital number, since it uses as much as digits as its factorization.

25308623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10176.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 25308623 is about 5030.7676352620. The cubic root of 25308623 is about 293.6000817624.

Adding to 25308623 its reverse (32680352), we get a palindrome (57988975).

The spelling of 25308623 in words is "twenty-five million, three hundred eight thousand, six hundred twenty-three".