25642073 has 8 divisors (see below), whose sum is σ = 26572488. Its totient is φ = 24724224.

The previous prime is 25642063. The next prime is 25642081. The reversal of 25642073 is 37024652.

It can be written as a sum of positive squares in 4 ways, for example, as 8111104 + 17530969 = 2848^2 + 4187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25642073 - 2²⁰ = 24593497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25642013) 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 7 ways as a sum of consecutive naturals, for example, 1115 + ... + 7247.

It is an arithmetic number, because the mean of its divisors is an integer number (3321561).

Almost surely, 2^25642073 is an apocalyptic number.

It is an amenable number.

25642073 is a deficient number, since it is larger than the sum of its proper divisors (930415).

25642073 is a wasteful number, since it uses less digits than its factorization.

25642073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 25642073 is about 5063.8002527746. The cubic root of 25642073 is about 294.8838880399.

The spelling of 25642073 in words is "twenty-five million, six hundred forty-two thousand, seventy-three".