25494673 has 4 divisors (see below), whose sum is σ = 25781220. Its totient is φ = 25208128.

The previous prime is 25494653. The next prime is 25494691. The reversal of 25494673 is 37649452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13300609 + 12194064 = 3647^2 + 3492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25494673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25494653) 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, 143140 + ... + 143317.

It is an arithmetic number, because the mean of its divisors is an integer number (6445305).

Almost surely, 2^25494673 is an apocalyptic number.

It is an amenable number.

25494673 is a deficient number, since it is larger than the sum of its proper divisors (286547).

25494673 is an equidigital number, since it uses as much as digits as its factorization.

25494673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286546.

The product of its digits is 181440, while the sum is 40.

The square root of 25494673 is about 5049.2249900356. The cubic root of 25494673 is about 294.3177684698.

The spelling of 25494673 in words is "twenty-five million, four hundred ninety-four thousand, six hundred seventy-three".