25731373 has 2 divisors, whose sum is σ = 25731374. Its totient is φ = 25731372.

The previous prime is 25731371. The next prime is 25731379. The reversal of 25731373 is 37313752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23164969 + 2566404 = 4813^2 + 1602^2 .

It is a cyclic number.

It is not a de Polignac number, because 25731373 - 2¹ = 25731371 is a prime.

Together with 25731371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25731371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12865686 + 12865687.

It is an arithmetic number, because the mean of its divisors is an integer number (12865687).

Almost surely, 2^25731373 is an apocalyptic number.

It is an amenable number.

25731373 is a deficient number, since it is larger than the sum of its proper divisors (1).

25731373 is an equidigital number, since it uses as much as digits as its factorization.

25731373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 31.

The square root of 25731373 is about 5072.6100776622. The cubic root of 25731373 is about 295.2258081507.

It can be divided in two parts, 2 and 5731373, that added together give a palindrome (5731375).

The spelling of 25731373 in words is "twenty-five million, seven hundred thirty-one thousand, three hundred seventy-three".