25708973 has 4 divisors (see below), whose sum is σ = 25723068. Its totient is φ = 25694880.

The previous prime is 25708967. The next prime is 25709003. The reversal of 25708973 is 37980752.

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 4012009 + 21696964 = 2003^2 + 4658^2 .

It is a cyclic number.

It is not a de Polignac number, because 25708973 - 2⁶ = 25708909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25708973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25708933) 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, 3818 + ... + 8123.

It is an arithmetic number, because the mean of its divisors is an integer number (6430767).

Almost surely, 2^25708973 is an apocalyptic number.

It is an amenable number.

25708973 is a deficient number, since it is larger than the sum of its proper divisors (14095).

25708973 is a wasteful number, since it uses less digits than its factorization.

25708973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14094.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 25708973 is about 5070.4016606182. The cubic root of 25708973 is about 295.1401153793.

The spelling of 25708973 in words is "twenty-five million, seven hundred eight thousand, nine hundred seventy-three".