25764779 has 8 divisors (see below), whose sum is σ = 27193680. Its totient is φ = 24343200.

The previous prime is 25764773. The next prime is 25764803. The reversal of 25764779 is 97746752.

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 25764779 - 2⁴ = 25764763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25764773) 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, 6389 + ... + 9609.

It is an arithmetic number, because the mean of its divisors is an integer number (3399210).

Almost surely, 2^25764779 is an apocalyptic number.

25764779 is a deficient number, since it is larger than the sum of its proper divisors (1428901).

25764779 is a wasteful number, since it uses less digits than its factorization.

25764779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661.

The product of its digits is 740880, while the sum is 47.

The square root of 25764779 is about 5075.9017918002. The cubic root of 25764779 is about 295.3535128075.

The spelling of 25764779 in words is "twenty-five million, seven hundred sixty-four thousand, seven hundred seventy-nine".