25102423 has 4 divisors (see below), whose sum is σ = 25242840. Its totient is φ = 24962008.

The previous prime is 25102403. The next prime is 25102463. The reversal of 25102423 is 32420152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25102423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25102423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25102403) 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, 69940 + ... + 70297.

It is an arithmetic number, because the mean of its divisors is an integer number (6310710).

Almost surely, 2^25102423 is an apocalyptic number.

25102423 is a deficient number, since it is larger than the sum of its proper divisors (140417).

25102423 is a wasteful number, since it uses less digits than its factorization.

25102423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140416.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 25102423 is about 5010.2318309635. The cubic root of 25102423 is about 292.8005452962.

Adding to 25102423 its reverse (32420152), we get a palindrome (57522575).

The spelling of 25102423 in words is "twenty-five million, one hundred two thousand, four hundred twenty-three".