25545413429 has 2 divisors, whose sum is σ = 25545413430. Its totient is φ = 25545413428.

The previous prime is 25545413407. The next prime is 25545413437. The reversal of 25545413429 is 92431454552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20743200625 + 4802212804 = 144025^2 + 69298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25545413429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25545413429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25545413459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12772706714 + 12772706715.

It is an arithmetic number, because the mean of its divisors is an integer number (12772706715).

Almost surely, 2^25545413429 is an apocalyptic number.

It is an amenable number.

25545413429 is a deficient number, since it is larger than the sum of its proper divisors (1).

25545413429 is an equidigital number, since it uses as much as digits as its factorization.

25545413429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864000, while the sum is 44.

The spelling of 25545413429 in words is "twenty-five billion, five hundred forty-five million, four hundred thirteen thousand, four hundred twenty-nine".