25075591 has 2 divisors, whose sum is σ = 25075592. Its totient is φ = 25075590.

The previous prime is 25075577. The next prime is 25075601. The reversal of 25075591 is 19557052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25075591 - 2¹⁷ = 24944519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25075511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12537795 + 12537796.

It is an arithmetic number, because the mean of its divisors is an integer number (12537796).

Almost surely, 2^25075591 is an apocalyptic number.

25075591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25075591 is an equidigital number, since it uses as much as digits as its factorization.

25075591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 25075591 is about 5007.5533946230. The cubic root of 25075591 is about 292.6961831908.

The spelling of 25075591 in words is "twenty-five million, seventy-five thousand, five hundred ninety-one".