25743881 has 2 divisors, whose sum is σ = 25743882. Its totient is φ = 25743880.

The previous prime is 25743871. The next prime is 25743889. The reversal of 25743881 is 18834752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21160000 + 4583881 = 4600^2 + 2141^2 .

It is a cyclic number.

It is not a de Polignac number, because 25743881 - 2¹⁸ = 25481737 is a prime.

It is a super-2 number, since 2×25743881² = 1325494817884322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25743889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12871940 + 12871941.

It is an arithmetic number, because the mean of its divisors is an integer number (12871941).

Almost surely, 2^25743881 is an apocalyptic number.

It is an amenable number.

25743881 is a deficient number, since it is larger than the sum of its proper divisors (1).

25743881 is an equidigital number, since it uses as much as digits as its factorization.

25743881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 38.

The square root of 25743881 is about 5073.8428237382. The cubic root of 25743881 is about 295.2736367454.

The spelling of 25743881 in words is "twenty-five million, seven hundred forty-three thousand, eight hundred eighty-one".