2505522399929 has 2 divisors, whose sum is σ = 2505522399930. Its totient is φ = 2505522399928.

The previous prime is 2505522399923. The next prime is 2505522399959. The reversal of 2505522399929 is 9299932255052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2299842009529 + 205680390400 = 1516523^2 + 453520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505522399929 - 2³⁶ = 2436802923193 is a prime.

It is not a weakly prime, because it can be changed into another prime (2505522399923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252761199964 + 1252761199965.

It is an arithmetic number, because the mean of its divisors is an integer number (1252761199965).

Almost surely, 2^{2505522399929} is an apocalyptic number.

It is an amenable number.

2505522399929 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505522399929 is an equidigital number, since it uses as much as digits as its factorization.

2505522399929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39366000, while the sum is 62.

It can be divided in two parts, 25055223 and 99929, that added together give a palindrome (25155152).

The spelling of 2505522399929 in words is "two trillion, five hundred five billion, five hundred twenty-two million, three hundred ninety-nine thousand, nine hundred twenty-nine".