25354977516073 has 2 divisors, whose sum is σ = 25354977516074. Its totient is φ = 25354977516072.

The previous prime is 25354977516053. The next prime is 25354977516149. The reversal of 25354977516073 is 37061577945352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15303845712169 + 10051131803904 = 3912013^2 + 3170352^2 .

It is a cyclic number.

It is not a de Polignac number, because 25354977516073 - 2²⁹ = 25354440645161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25354977515996 and 25354977516014.

It is not a weakly prime, because it can be changed into another prime (25354977516053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12677488758036 + 12677488758037.

It is an arithmetic number, because the mean of its divisors is an integer number (12677488758037).

Almost surely, 2^{25354977516073} is an apocalyptic number.

It is an amenable number.

25354977516073 is a deficient number, since it is larger than the sum of its proper divisors (1).

25354977516073 is an equidigital number, since it uses as much as digits as its factorization.

25354977516073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 166698000, while the sum is 64.

The spelling of 25354977516073 in words is "twenty-five trillion, three hundred fifty-four billion, nine hundred seventy-seven million, five hundred sixteen thousand, seventy-three".