25510973 has 2 divisors, whose sum is σ = 25510974. Its totient is φ = 25510972.

The previous prime is 25510943. The next prime is 25511011. The reversal of 25510973 is 37901552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15155449 + 10355524 = 3893^2 + 3218^2 .

It is a cyclic number.

It is not a de Polignac number, because 25510973 - 2⁸ = 25510717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25510913) 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 as a sum of consecutive naturals, namely, 12755486 + 12755487.

It is an arithmetic number, because the mean of its divisors is an integer number (12755487).

Almost surely, 2^25510973 is an apocalyptic number.

It is an amenable number.

25510973 is a deficient number, since it is larger than the sum of its proper divisors (1).

25510973 is an equidigital number, since it uses as much as digits as its factorization.

25510973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 25510973 is about 5050.8388412223. The cubic root of 25510973 is about 294.3804790550.

The spelling of 25510973 in words is "twenty-five million, five hundred ten thousand, nine hundred seventy-three".