25423511 has 4 divisors (see below), whose sum is σ = 25434312. Its totient is φ = 25412712.

The previous prime is 25423507. The next prime is 25423529. The reversal of 25423511 is 11532452.

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 25423511 - 2² = 25423507 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 (25423571) 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, 200 + ... + 7133.

It is an arithmetic number, because the mean of its divisors is an integer number (6358578).

Almost surely, 2^25423511 is an apocalyptic number.

25423511 is a deficient number, since it is larger than the sum of its proper divisors (10801).

25423511 is an equidigital number, since it uses as much as digits as its factorization.

25423511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10800.

The product of its digits is 1200, while the sum is 23.

The square root of 25423511 is about 5042.1732417679. The cubic root of 25423511 is about 294.0436751565.

Adding to 25423511 its reverse (11532452), we get a palindrome (36955963).

The spelling of 25423511 in words is "twenty-five million, four hundred twenty-three thousand, five hundred eleven".