25980469 has 4 divisors (see below), whose sum is σ = 25990720. Its totient is φ = 25970220.

The previous prime is 25980463. The next prime is 25980497. The reversal of 25980469 is 96408952.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25980469 is a prime.

It is a super-2 number, since 2×25980469² = 1349969538919922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25980463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762 + ... + 7420.

It is an arithmetic number, because the mean of its divisors is an integer number (6497680).

Almost surely, 2^25980469 is an apocalyptic number.

It is an amenable number.

25980469 is a deficient number, since it is larger than the sum of its proper divisors (10251).

25980469 is an equidigital number, since it uses as much as digits as its factorization.

25980469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10250.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 25980469 is about 5097.1039816743. The cubic root of 25980469 is about 296.1754081165.

The spelling of 25980469 in words is "twenty-five million, nine hundred eighty thousand, four hundred sixty-nine".