825515486129 has 2 divisors, whose sum is σ = 825515486130. Its totient is φ = 825515486128.

The previous prime is 825515486119. The next prime is 825515486183. The reversal of 825515486129 is 921684515528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824195253904 + 1320232225 = 907852^2 + 36335^2 .

It is a cyclic number.

It is not a de Polignac number, because 825515486129 - 2¹⁶ = 825515420593 is a prime.

It is not a weakly prime, because it can be changed into another prime (825515486119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412757743064 + 412757743065.

It is an arithmetic number, because the mean of its divisors is an integer number (412757743065).

Almost surely, 2^825515486129 is an apocalyptic number.

It is an amenable number.

825515486129 is a deficient number, since it is larger than the sum of its proper divisors (1).

825515486129 is an equidigital number, since it uses as much as digits as its factorization.

825515486129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912000, while the sum is 56.

The spelling of 825515486129 in words is "eight hundred twenty-five billion, five hundred fifteen million, four hundred eighty-six thousand, one hundred twenty-nine".