25712769 has 4 divisors (see below), whose sum is σ = 34283696. Its totient is φ = 17141844.

The previous prime is 25712759. The next prime is 25712777. The reversal of 25712769 is 96721752.

25712769 is nontrivially palindromic in base 16.

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 not a de Polignac number, because 25712769 - 2¹⁹ = 25188481 is a prime.

It is a super-2 number, since 2×25712769² = 1322292979294722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25712749) 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, 4285459 + ... + 4285464.

It is an arithmetic number, because the mean of its divisors is an integer number (8570924).

Almost surely, 2^25712769 is an apocalyptic number.

It is an amenable number.

25712769 is a deficient number, since it is larger than the sum of its proper divisors (8570927).

25712769 is an equidigital number, since it uses as much as digits as its factorization.

25712769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570926.

The product of its digits is 52920, while the sum is 39.

The square root of 25712769 is about 5070.7759761204. The cubic root of 25712769 is about 295.1546407455.

The spelling of 25712769 in words is "twenty-five million, seven hundred twelve thousand, seven hundred sixty-nine".