25640333 has 8 divisors (see below), whose sum is σ = 26285952. Its totient is φ = 24998976.

The previous prime is 25640311. The next prime is 25640339. The reversal of 25640333 is 33304652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25640333 - 2⁶ = 25640269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25640339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13541 + ... + 15317.

It is an arithmetic number, because the mean of its divisors is an integer number (3285744).

Almost surely, 2^25640333 is an apocalyptic number.

It is an amenable number.

25640333 is a deficient number, since it is larger than the sum of its proper divisors (645619).

25640333 is a wasteful number, since it uses less digits than its factorization.

25640333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 25640333 is about 5063.6284421351. The cubic root of 25640333 is about 294.8772178879.

Adding to 25640333 its reverse (33304652), we get a palindrome (58944985).

The spelling of 25640333 in words is "twenty-five million, six hundred forty thousand, three hundred thirty-three".