25140423 has 32 divisors (see below), whose sum is σ = 42780672. Its totient is φ = 12751200.

The previous prime is 25140389. The next prime is 25140457. The reversal of 25140423 is 32404152.

It is an interprime number because it is at equal distance from previous prime (25140389) and next prime (25140457).

It is not a de Polignac number, because 25140423 - 2⁶ = 25140359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 25140423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8668 + ... + 11198.

It is an arithmetic number, because the mean of its divisors is an integer number (1336896).

Almost surely, 2^25140423 is an apocalyptic number.

25140423 is a deficient number, since it is larger than the sum of its proper divisors (17640249).

25140423 is a wasteful number, since it uses less digits than its factorization.

25140423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 25140423 is about 5014.0226365664. The cubic root of 25140423 is about 292.9482177746.

Adding to 25140423 its reverse (32404152), we get a palindrome (57544575).

The spelling of 25140423 in words is "twenty-five million, one hundred forty thousand, four hundred twenty-three".