25532081 has 2 divisors, whose sum is σ = 25532082. Its totient is φ = 25532080.

The previous prime is 25532033. The next prime is 25532083. The reversal of 25532081 is 18023552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24750625 + 781456 = 4975^2 + 884^2 .

It is a cyclic number.

It is not a de Polignac number, because 25532081 - 2²² = 21337777 is a prime.

It is a super-2 number, since 2×25532081² = 1303774320381122, which contains 22 as substring.

Together with 25532083, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25532081.

It is not a weakly prime, because it can be changed into another prime (25532083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12766040 + 12766041.

It is an arithmetic number, because the mean of its divisors is an integer number (12766041).

Almost surely, 2^25532081 is an apocalyptic number.

It is an amenable number.

25532081 is a deficient number, since it is larger than the sum of its proper divisors (1).

25532081 is an equidigital number, since it uses as much as digits as its factorization.

25532081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 25532081 is about 5052.9279630725. The cubic root of 25532081 is about 294.4616476586.

The spelling of 25532081 in words is "twenty-five million, five hundred thirty-two thousand, eighty-one".