25831873 has 2 divisors, whose sum is σ = 25831874. Its totient is φ = 25831872.

The previous prime is 25831867. The next prime is 25831877. The reversal of 25831873 is 37813852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17205904 + 8625969 = 4148^2 + 2937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25831873 is a prime.

It is not a weakly prime, because it can be changed into another prime (25831877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12915936 + 12915937.

It is an arithmetic number, because the mean of its divisors is an integer number (12915937).

Almost surely, 2^25831873 is an apocalyptic number.

It is an amenable number.

25831873 is a deficient number, since it is larger than the sum of its proper divisors (1).

25831873 is an equidigital number, since it uses as much as digits as its factorization.

25831873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 25831873 is about 5082.5065666460. The cubic root of 25831873 is about 295.6096670469.

It can be divided in two parts, 258 and 31873, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 25831873 in words is "twenty-five million, eight hundred thirty-one thousand, eight hundred seventy-three".