25471623 has 4 divisors (see below), whose sum is σ = 33962168. Its totient is φ = 16981080.

The previous prime is 25471613. The next prime is 25471631. The reversal of 25471623 is 32617452.

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

It is not a de Polignac number, because 25471623 - 2¹⁷ = 25340551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25471613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4245268 + ... + 4245273.

It is an arithmetic number, because the mean of its divisors is an integer number (8490542).

Almost surely, 2^25471623 is an apocalyptic number.

25471623 is a deficient number, since it is larger than the sum of its proper divisors (8490545).

25471623 is an equidigital number, since it uses as much as digits as its factorization.

25471623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8490544.

The product of its digits is 10080, while the sum is 30.

The square root of 25471623 is about 5046.9419453764. The cubic root of 25471623 is about 294.2290431363.

The spelling of 25471623 in words is "twenty-five million, four hundred seventy-one thousand, six hundred twenty-three".