25006081 has 2 divisors, whose sum is σ = 25006082. Its totient is φ = 25006080.

The previous prime is 25006073. The next prime is 25006097. The reversal of 25006081 is 18060052.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14508481 + 10497600 = 3809^2 + 3240^2 .

It is a cyclic number.

It is not a de Polignac number, because 25006081 - 2³ = 25006073 is a prime.

It is a super-2 number, since 2×25006081² = 1250608173957122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25006001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12503040 + 12503041.

It is an arithmetic number, because the mean of its divisors is an integer number (12503041).

Almost surely, 2^25006081 is an apocalyptic number.

It is an amenable number.

25006081 is a deficient number, since it is larger than the sum of its proper divisors (1).

25006081 is an equidigital number, since it uses as much as digits as its factorization.

25006081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 25006081 is about 5000.6080630259. The cubic root of 25006081 is about 292.4254798351.

The spelling of 25006081 in words is "twenty-five million, six thousand, eighty-one".