25640341 has 8 divisors (see below), whose sum is σ = 26319744. Its totient is φ = 24964800.

The previous prime is 25640339. The next prime is 25640353. The reversal of 25640341 is 14304652.

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 25640341 - 2¹ = 25640339 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 (25640311) 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, 16500 + ... + 17986.

It is an arithmetic number, because the mean of its divisors is an integer number (3289968).

Almost surely, 2^25640341 is an apocalyptic number.

It is an amenable number.

25640341 is a deficient number, since it is larger than the sum of its proper divisors (679403).

25640341 is a wasteful number, since it uses less digits than its factorization.

25640341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 25640341 is about 5063.6292320825. The cubic root of 25640341 is about 294.8772485559.

Adding to 25640341 its reverse (14304652), we get a palindrome (39944993).

The spelling of 25640341 in words is "twenty-five million, six hundred forty thousand, three hundred forty-one".