25041440429 has 2 divisors, whose sum is σ = 25041440430. Its totient is φ = 25041440428.

The previous prime is 25041440377. The next prime is 25041440449. The reversal of 25041440429 is 92404414052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23467176100 + 1574264329 = 153190^2 + 39677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25041440429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25041440449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12520720214 + 12520720215.

It is an arithmetic number, because the mean of its divisors is an integer number (12520720215).

Almost surely, 2^25041440429 is an apocalyptic number.

It is an amenable number.

25041440429 is a deficient number, since it is larger than the sum of its proper divisors (1).

25041440429 is an equidigital number, since it uses as much as digits as its factorization.

25041440429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 25041440429 in words is "twenty-five billion, forty-one million, four hundred forty thousand, four hundred twenty-nine".