825899617547 has 2 divisors, whose sum is σ = 825899617548. Its totient is φ = 825899617546.

The previous prime is 825899617453. The next prime is 825899617579. The reversal of 825899617547 is 745716998528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 825899617547 - 2¹⁰ = 825899616523 is a prime.

It is a super-2 number, since 2×825899617547² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (825899617847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412949808773 + 412949808774.

It is an arithmetic number, because the mean of its divisors is an integer number (412949808774).

Almost surely, 2^825899617547 is an apocalyptic number.

825899617547 is a deficient number, since it is larger than the sum of its proper divisors (1).

825899617547 is an equidigital number, since it uses as much as digits as its factorization.

825899617547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 304819200, while the sum is 71.

The spelling of 825899617547 in words is "eight hundred twenty-five billion, eight hundred ninety-nine million, six hundred seventeen thousand, five hundred forty-seven".