25250572891 has 2 divisors, whose sum is σ = 25250572892. Its totient is φ = 25250572890.

The previous prime is 25250572877. The next prime is 25250572913. The reversal of 25250572891 is 19827505252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25250572891 - 2¹³ = 25250564699 is a prime.

It is not a weakly prime, because it can be changed into another prime (25250572811) 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, 12625286445 + 12625286446.

It is an arithmetic number, because the mean of its divisors is an integer number (12625286446).

Almost surely, 2^25250572891 is an apocalyptic number.

25250572891 is a deficient number, since it is larger than the sum of its proper divisors (1).

25250572891 is an equidigital number, since it uses as much as digits as its factorization.

25250572891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504000, while the sum is 46.

The spelling of 25250572891 in words is "twenty-five billion, two hundred fifty million, five hundred seventy-two thousand, eight hundred ninety-one".