25928236129 has 2 divisors, whose sum is σ = 25928236130. Its totient is φ = 25928236128.

The previous prime is 25928236051. The next prime is 25928236163. The reversal of 25928236129 is 92163282952.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23871795025 + 2056441104 = 154505^2 + 45348^2 .

It is a cyclic number.

It is not a de Polignac number, because 25928236129 - 2¹⁷ = 25928105057 is a prime.

It is a super-3 number, since 3×25928236129³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (25928236189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12964118064 + 12964118065.

It is an arithmetic number, because the mean of its divisors is an integer number (12964118065).

Almost surely, 2^25928236129 is an apocalyptic number.

It is an amenable number.

25928236129 is a deficient number, since it is larger than the sum of its proper divisors (1).

25928236129 is an equidigital number, since it uses as much as digits as its factorization.

25928236129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 49.

It can be divided in two parts, 2592823 and 6129, that added together give a palindrome (2598952).

The spelling of 25928236129 in words is "twenty-five billion, nine hundred twenty-eight million, two hundred thirty-six thousand, one hundred twenty-nine".