25875281 has 2 divisors, whose sum is σ = 25875282. Its totient is φ = 25875280.

The previous prime is 25875257. The next prime is 25875301. The reversal of 25875281 is 18257852.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14592400 + 11282881 = 3820^2 + 3359^2 .

It is a cyclic number.

It is not a de Polignac number, because 25875281 - 2¹⁴ = 25858897 is a prime.

It is a super-2 number, since 2×25875281² = 1339060333657922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25875211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12937640 + 12937641.

It is an arithmetic number, because the mean of its divisors is an integer number (12937641).

Almost surely, 2^25875281 is an apocalyptic number.

It is an amenable number.

25875281 is a deficient number, since it is larger than the sum of its proper divisors (1).

25875281 is an equidigital number, since it uses as much as digits as its factorization.

25875281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44800, while the sum is 38.

The square root of 25875281 is about 5086.7751080621. The cubic root of 25875281 is about 295.7751556738.

The spelling of 25875281 in words is "twenty-five million, eight hundred seventy-five thousand, two hundred eighty-one".