25766567 has 4 divisors (see below), whose sum is σ = 25777560. Its totient is φ = 25755576.

The previous prime is 25766501. The next prime is 25766579. The reversal of 25766567 is 76566752.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25766567 - 2¹⁴ = 25750183 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 (25796567) 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, 413 + ... + 7190.

It is an arithmetic number, because the mean of its divisors is an integer number (6444390).

Almost surely, 2^25766567 is an apocalyptic number.

25766567 is a deficient number, since it is larger than the sum of its proper divisors (10993).

25766567 is an equidigital number, since it uses as much as digits as its factorization.

25766567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10992.

The product of its digits is 529200, while the sum is 44.

The square root of 25766567 is about 5076.0779150837. The cubic root of 25766567 is about 295.3603448716.

The spelling of 25766567 in words is "twenty-five million, seven hundred sixty-six thousand, five hundred sixty-seven".