25999473 has 4 divisors (see below), whose sum is σ = 34665968. Its totient is φ = 17332980.

The previous prime is 25999459. The next prime is 25999489. The reversal of 25999473 is 37499952.

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 25999473 - 2⁸ = 25999217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25999403) 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, 4333243 + ... + 4333248.

It is an arithmetic number, because the mean of its divisors is an integer number (8666492).

Almost surely, 2^25999473 is an apocalyptic number.

It is an amenable number.

25999473 is a deficient number, since it is larger than the sum of its proper divisors (8666495).

25999473 is an equidigital number, since it uses as much as digits as its factorization.

25999473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666494.

The product of its digits is 612360, while the sum is 48.

The square root of 25999473 is about 5098.9678367293. The cubic root of 25999473 is about 296.2476052433.

The spelling of 25999473 in words is "twenty-five million, nine hundred ninety-nine thousand, four hundred seventy-three".