25012043789 has 2 divisors, whose sum is σ = 25012043790. Its totient is φ = 25012043788.

The previous prime is 25012043773. The next prime is 25012043807. The reversal of 25012043789 is 98734021052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24990234889 + 21808900 = 158083^2 + 4670^2 .

It is a cyclic number.

It is not a de Polignac number, because 25012043789 - 2⁴ = 25012043773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25012043489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12506021894 + 12506021895.

It is an arithmetic number, because the mean of its divisors is an integer number (12506021895).

Almost surely, 2^25012043789 is an apocalyptic number.

It is an amenable number.

25012043789 is a deficient number, since it is larger than the sum of its proper divisors (1).

25012043789 is an equidigital number, since it uses as much as digits as its factorization.

25012043789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 25012043789 in words is "twenty-five billion, twelve million, forty-three thousand, seven hundred eighty-nine".