25341661 has 4 divisors (see below), whose sum is σ = 25352032. Its totient is φ = 25331292.

The previous prime is 25341647. The next prime is 25341671. The reversal of 25341661 is 16614352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25341661 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 (25341671) 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, 730 + ... + 7156.

It is an arithmetic number, because the mean of its divisors is an integer number (6338008).

Almost surely, 2^25341661 is an apocalyptic number.

It is an amenable number.

25341661 is a deficient number, since it is larger than the sum of its proper divisors (10371).

25341661 is an equidigital number, since it uses as much as digits as its factorization.

25341661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10370.

The product of its digits is 4320, while the sum is 28.

The square root of 25341661 is about 5034.0501586695. The cubic root of 25341661 is about 293.7277818717.

It can be divided in two parts, 253 and 41661, that added together give a palindrome (41914).

The spelling of 25341661 in words is "twenty-five million, three hundred forty-one thousand, six hundred sixty-one".