25885493 has 2 divisors, whose sum is σ = 25885494. Its totient is φ = 25885492.

The previous prime is 25885427. The next prime is 25885499. The reversal of 25885493 is 39458852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24671089 + 1214404 = 4967^2 + 1102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25885493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25885499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12942746 + 12942747.

It is an arithmetic number, because the mean of its divisors is an integer number (12942747).

Almost surely, 2^25885493 is an apocalyptic number.

It is an amenable number.

25885493 is a deficient number, since it is larger than the sum of its proper divisors (1).

25885493 is an equidigital number, since it uses as much as digits as its factorization.

25885493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 44.

The square root of 25885493 is about 5087.7787884302. The cubic root of 25885493 is about 295.8140609985.

The spelling of 25885493 in words is "twenty-five million, eight hundred eighty-five thousand, four hundred ninety-three".