25650661 has 8 divisors (see below), whose sum is σ = 26484480. Its totient is φ = 24827712.

The previous prime is 25650641. The next prime is 25650701. The reversal of 25650661 is 16605652.

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 25650661 - 2⁷ = 25650533 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 (25650631) 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, 2220 + ... + 7498.

It is an arithmetic number, because the mean of its divisors is an integer number (3310560).

Almost surely, 2^25650661 is an apocalyptic number.

It is an amenable number.

25650661 is a deficient number, since it is larger than the sum of its proper divisors (833819).

25650661 is a wasteful number, since it uses less digits than its factorization.

25650661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 25650661 is about 5064.6481615212. The cubic root of 25650661 is about 294.9168050374.

The spelling of 25650661 in words is "twenty-five million, six hundred fifty thousand, six hundred sixty-one".