825899617453 has 2 divisors, whose sum is σ = 825899617454. Its totient is φ = 825899617452.

The previous prime is 825899617381. The next prime is 825899617547. The reversal of 825899617453 is 354716998528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824387729764 + 1511887689 = 907958^2 + 38883^2 .

It is a cyclic number.

It is not a de Polignac number, because 825899617453 - 2²⁵ = 825866063021 is a prime.

It is a super-2 number, since 2×825899617453² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825899647453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412949808726 + 412949808727.

It is an arithmetic number, because the mean of its divisors is an integer number (412949808727).

Almost surely, 2^825899617453 is an apocalyptic number.

It is an amenable number.

825899617453 is a deficient number, since it is larger than the sum of its proper divisors (1).

825899617453 is an equidigital number, since it uses as much as digits as its factorization.

825899617453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130636800, while the sum is 67.

The spelling of 825899617453 in words is "eight hundred twenty-five billion, eight hundred ninety-nine million, six hundred seventeen thousand, four hundred fifty-three".