25190823 has 16 divisors (see below), whose sum is σ = 38458880. Its totient is φ = 14367456.

The previous prime is 25190801. The next prime is 25190833. The reversal of 25190823 is 32809152.

It is a happy number.

It is not a de Polignac number, because 25190823 - 2⁵ = 25190791 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 (25190833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16686 + ... + 18132.

It is an arithmetic number, because the mean of its divisors is an integer number (2403680).

Almost surely, 2^25190823 is an apocalyptic number.

25190823 is a deficient number, since it is larger than the sum of its proper divisors (13268057).

25190823 is a wasteful number, since it uses less digits than its factorization.

25190823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 25190823 is about 5019.0460248936. The cubic root of 25190823 is about 293.1438487280.

Adding to 25190823 its reverse (32809152), we get a palindrome (57999975).

The spelling of 25190823 in words is "twenty-five million, one hundred ninety thousand, eight hundred twenty-three".