25535023 has 4 divisors (see below), whose sum is σ = 25967880. Its totient is φ = 25102168.

The previous prime is 25535021. The next prime is 25535047. The reversal of 25535023 is 32053552.

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

It is a cyclic number.

It is not a de Polignac number, because 25535023 - 2¹ = 25535021 is a prime.

It is a super-2 number, since 2×25535023² = 1304074799221058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25535021) 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, 216340 + ... + 216457.

It is an arithmetic number, because the mean of its divisors is an integer number (6491970).

Almost surely, 2^25535023 is an apocalyptic number.

25535023 is a deficient number, since it is larger than the sum of its proper divisors (432857).

25535023 is an equidigital number, since it uses as much as digits as its factorization.

25535023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432856.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 25535023 is about 5053.2190730266. The cubic root of 25535023 is about 294.4729572589.

Adding to 25535023 its reverse (32053552), we get a palindrome (57588575).

The spelling of 25535023 in words is "twenty-five million, five hundred thirty-five thousand, twenty-three".