25766641 has 8 divisors (see below), whose sum is σ = 27185120. Its totient is φ = 24354432.

The previous prime is 25766633. The next prime is 25766651. The reversal of 25766641 is 14666752.

It is a happy number.

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 25766641 - 2³ = 25766633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25766641.

It is not an unprimeable number, because it can be changed into a prime (25766621) 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, 8641 + ... + 11233.

It is an arithmetic number, because the mean of its divisors is an integer number (3398140).

Almost surely, 2^25766641 is an apocalyptic number.

It is an amenable number.

25766641 is a deficient number, since it is larger than the sum of its proper divisors (1418479).

25766641 is a wasteful number, since it uses less digits than its factorization.

25766641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135.

The product of its digits is 60480, while the sum is 37.

The square root of 25766641 is about 5076.0852041706. The cubic root of 25766641 is about 295.3606276236.

The spelling of 25766641 in words is "twenty-five million, seven hundred sixty-six thousand, six hundred forty-one".