10265581 has 2 divisors, whose sum is σ = 10265582. Its totient is φ = 10265580.

The previous prime is 10265561. The next prime is 10265597. The reversal of 10265581 is 18556201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5447556 + 4818025 = 2334^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 10265581 - 2⁹ = 10265069 is a prime.

It is a super-2 number, since 2×10265581² = 210764306535122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10265561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5132790 + 5132791.

It is an arithmetic number, because the mean of its divisors is an integer number (5132791).

Almost surely, 2^10265581 is an apocalyptic number.

It is an amenable number.

10265581 is a deficient number, since it is larger than the sum of its proper divisors (1).

10265581 is an equidigital number, since it uses as much as digits as its factorization.

10265581 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 28.

The square root of 10265581 is about 3203.9945380727. The cubic root of 10265581 is about 217.3340858263.

The spelling of 10265581 in words is "ten million, two hundred sixty-five thousand, five hundred eighty-one".