25861093 has 2 divisors, whose sum is σ = 25861094. Its totient is φ = 25861092.

The previous prime is 25861081. The next prime is 25861123. The reversal of 25861093 is 39016852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25583364 + 277729 = 5058^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 25861093 - 2¹⁷ = 25730021 is a prime.

It is a super-2 number, since 2×25861093² = 1337592262309298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25861193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12930546 + 12930547.

It is an arithmetic number, because the mean of its divisors is an integer number (12930547).

Almost surely, 2^25861093 is an apocalyptic number.

It is an amenable number.

25861093 is a deficient number, since it is larger than the sum of its proper divisors (1).

25861093 is an equidigital number, since it uses as much as digits as its factorization.

25861093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 25861093 is about 5085.3803200941. The cubic root of 25861093 is about 295.7210857277.

The spelling of 25861093 in words is "twenty-five million, eight hundred sixty-one thousand, ninety-three".