25042205129 has 2 divisors, whose sum is σ = 25042205130. Its totient is φ = 25042205128.

The previous prime is 25042205119. The next prime is 25042205137. The reversal of 25042205129 is 92150224052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20489059600 + 4553145529 = 143140^2 + 67477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25042205129 is a prime.

It is a super-2 number, since 2×25042205129² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25042205095 and 25042205104.

It is not a weakly prime, because it can be changed into another prime (25042205119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12521102564 + 12521102565.

It is an arithmetic number, because the mean of its divisors is an integer number (12521102565).

Almost surely, 2^25042205129 is an apocalyptic number.

It is an amenable number.

25042205129 is a deficient number, since it is larger than the sum of its proper divisors (1).

25042205129 is an equidigital number, since it uses as much as digits as its factorization.

25042205129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 25042205129 in words is "twenty-five billion, forty-two million, two hundred five thousand, one hundred twenty-nine".