25764665 has 16 divisors (see below), whose sum is σ = 32966400. Its totient is φ = 19274112.

The previous prime is 25764653. The next prime is 25764667. The reversal of 25764665 is 56646752.

It is a cyclic number.

It is not a de Polignac number, because 25764665 - 2¹⁰ = 25763641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25764667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5789 + ... + 9221.

It is an arithmetic number, because the mean of its divisors is an integer number (2060400).

Almost surely, 2^25764665 is an apocalyptic number.

It is an amenable number.

25764665 is a deficient number, since it is larger than the sum of its proper divisors (7201735).

25764665 is a wasteful number, since it uses less digits than its factorization.

25764665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536.

The product of its digits is 302400, while the sum is 41.

The square root of 25764665 is about 5075.8905622560. The cubic root of 25764665 is about 295.3530771954.

The spelling of 25764665 in words is "twenty-five million, seven hundred sixty-four thousand, six hundred sixty-five".