25512673 has 4 divisors (see below), whose sum is σ = 25522948. Its totient is φ = 25502400.

The previous prime is 25512671. The next prime is 25512679. The reversal of 25512673 is 37621552.

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 can be written as a sum of positive squares in 2 ways, for example, as 11881809 + 13630864 = 3447^2 + 3692^2 .

It is a cyclic number.

It is not a de Polignac number, because 25512673 - 2¹ = 25512671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25512671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165 + ... + 7237.

It is an arithmetic number, because the mean of its divisors is an integer number (6380737).

Almost surely, 2^25512673 is an apocalyptic number.

It is an amenable number.

25512673 is a deficient number, since it is larger than the sum of its proper divisors (10275).

25512673 is an equidigital number, since it uses as much as digits as its factorization.

25512673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10274.

The product of its digits is 12600, while the sum is 31.

The square root of 25512673 is about 5051.0071272965. The cubic root of 25512673 is about 294.3870178844.

The spelling of 25512673 in words is "twenty-five million, five hundred twelve thousand, six hundred seventy-three".