25837481 has 2 divisors, whose sum is σ = 25837482. Its totient is φ = 25837480.

The previous prime is 25837417. The next prime is 25837499. The reversal of 25837481 is 18473852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16933225 + 8904256 = 4115^2 + 2984^2 .

It is a cyclic number.

It is not a de Polignac number, because 25837481 - 2⁶ = 25837417 is a prime.

It is a super-2 number, since 2×25837481² = 1335150848850722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25837081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12918740 + 12918741.

It is an arithmetic number, because the mean of its divisors is an integer number (12918741).

Almost surely, 2^25837481 is an apocalyptic number.

It is an amenable number.

25837481 is a deficient number, since it is larger than the sum of its proper divisors (1).

25837481 is an equidigital number, since it uses as much as digits as its factorization.

25837481 is an evil number, because the sum of its binary digits is even.

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

The square root of 25837481 is about 5083.0582329932. The cubic root of 25837481 is about 295.6310574053.

The spelling of 25837481 in words is "twenty-five million, eight hundred thirty-seven thousand, four hundred eighty-one".