25671089 has 2 divisors, whose sum is σ = 25671090. Its totient is φ = 25671088.

The previous prime is 25671053. The next prime is 25671101. The reversal of 25671089 is 98017652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24671089 + 1000000 = 4967^2 + 1000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25671089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25671029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12835544 + 12835545.

It is an arithmetic number, because the mean of its divisors is an integer number (12835545).

Almost surely, 2^25671089 is an apocalyptic number.

It is an amenable number.

25671089 is a deficient number, since it is larger than the sum of its proper divisors (1).

25671089 is an equidigital number, since it uses as much as digits as its factorization.

25671089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 25671089 is about 5066.6644846487. The cubic root of 25671089 is about 294.9950741301.

The spelling of 25671089 in words is "twenty-five million, six hundred seventy-one thousand, eighty-nine".