25890043 has 2 divisors, whose sum is σ = 25890044. Its totient is φ = 25890042.

The previous prime is 25889993. The next prime is 25890049. The reversal of 25890043 is 34009852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25890043 - 2⁹ = 25889531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25889987 and 25890014.

It is not a weakly prime, because it can be changed into another prime (25890049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12945021 + 12945022.

It is an arithmetic number, because the mean of its divisors is an integer number (12945022).

Almost surely, 2^25890043 is an apocalyptic number.

25890043 is a deficient number, since it is larger than the sum of its proper divisors (1).

25890043 is an equidigital number, since it uses as much as digits as its factorization.

25890043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 25890043 is about 5088.2259187265. The cubic root of 25890043 is about 295.8313921361.

Adding to 25890043 its reverse (34009852), we get a palindrome (59899895).

The spelling of 25890043 in words is "twenty-five million, eight hundred ninety thousand, forty-three".