25423013 has 24 divisors (see below), whose sum is σ = 32651424. Its totient is φ = 19572000.

The previous prime is 25423009. The next prime is 25423043. The reversal of 25423013 is 31032452.

It is a happy number.

It is not a de Polignac number, because 25423013 - 2² = 25423009 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 (25423003) 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 23 ways as a sum of consecutive naturals, for example, 54206 + ... + 54672.

It is an arithmetic number, because the mean of its divisors is an integer number (1360476).

Almost surely, 2^25423013 is an apocalyptic number.

It is an amenable number.

25423013 is a deficient number, since it is larger than the sum of its proper divisors (7228411).

25423013 is a wasteful number, since it uses less digits than its factorization.

25423013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 25423013 is about 5042.1238580582. The cubic root of 25423013 is about 294.0417552184.

Adding to 25423013 its reverse (31032452), we get a palindrome (56455465).

It can be divided in two parts, 2542 and 3013, that added together give a palindrome (5555).

The spelling of 25423013 in words is "twenty-five million, four hundred twenty-three thousand, thirteen".