25540235 has 16 divisors (see below), whose sum is σ = 36550656. Its totient is φ = 16751328.

The previous prime is 25540217. The next prime is 25540243. The reversal of 25540235 is 53204552.

It is a cyclic number.

It is not a de Polignac number, because 25540235 - 2¹² = 25536139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15059 + ... + 16668.

It is an arithmetic number, because the mean of its divisors is an integer number (2284416).

Almost surely, 2^25540235 is an apocalyptic number.

25540235 is a deficient number, since it is larger than the sum of its proper divisors (11010421).

25540235 is a wasteful number, since it uses less digits than its factorization.

25540235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31762.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 25540235 is about 5053.7347575828. The cubic root of 25540235 is about 294.4929910329.

Adding to 25540235 its reverse (53204552), we get a palindrome (78744787).

The spelling of 25540235 in words is "twenty-five million, five hundred forty thousand, two hundred thirty-five".