25899893 has 2 divisors, whose sum is σ = 25899894. Its totient is φ = 25899892.

The previous prime is 25899829. The next prime is 25899899. The reversal of 25899893 is 39899852.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14455204 + 11444689 = 3802^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 25899893 - 2⁶ = 25899829 is a prime.

It is a super-2 number, since 2×25899893² = 1341608914822898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25899899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12949946 + 12949947.

It is an arithmetic number, because the mean of its divisors is an integer number (12949947).

Almost surely, 2^25899893 is an apocalyptic number.

It is an amenable number.

25899893 is a deficient number, since it is larger than the sum of its proper divisors (1).

25899893 is an equidigital number, since it uses as much as digits as its factorization.

25899893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 53.

The square root of 25899893 is about 5089.1937475400. The cubic root of 25899893 is about 295.8689042374.

The spelling of 25899893 in words is "twenty-five million, eight hundred ninety-nine thousand, eight hundred ninety-three".