25401211859 has 2 divisors, whose sum is σ = 25401211860. Its totient is φ = 25401211858.

The previous prime is 25401211831. The next prime is 25401211879. The reversal of 25401211859 is 95811210452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25401211859 is a prime.

It is not a weakly prime, because it can be changed into another prime (25401211879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700605929 + 12700605930.

It is an arithmetic number, because the mean of its divisors is an integer number (12700605930).

Almost surely, 2^25401211859 is an apocalyptic number.

25401211859 is a deficient number, since it is larger than the sum of its proper divisors (1).

25401211859 is an equidigital number, since it uses as much as digits as its factorization.

25401211859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 38.

The spelling of 25401211859 in words is "twenty-five billion, four hundred one million, two hundred eleven thousand, eight hundred fifty-nine".