25769769 has 4 divisors (see below), whose sum is σ = 34359696. Its totient is φ = 17179844.

The previous prime is 25769761. The next prime is 25769791. The reversal of 25769769 is 96796752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25769769 - 2³ = 25769761 is a prime.

It is a super-2 number, since 2×25769769² = 1328161988626722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25769761) 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, 4294959 + ... + 4294964.

It is an arithmetic number, because the mean of its divisors is an integer number (8589924).

Almost surely, 2^25769769 is an apocalyptic number.

It is an amenable number.

25769769 is a deficient number, since it is larger than the sum of its proper divisors (8589927).

25769769 is an equidigital number, since it uses as much as digits as its factorization.

25769769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8589926.

The product of its digits is 1428840, while the sum is 51.

The square root of 25769769 is about 5076.3933062756. The cubic root of 25769769 is about 295.3725791317.

The spelling of 25769769 in words is "twenty-five million, seven hundred sixty-nine thousand, seven hundred sixty-nine".