825764899 has 2 divisors, whose sum is σ = 825764900. Its totient is φ = 825764898.

The previous prime is 825764843. The next prime is 825764939. The reversal of 825764899 is 998467528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 825764899 - 2²³ = 817376291 is a prime.

It is not a weakly prime, because it can be changed into another prime (825764809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412882449 + 412882450.

It is an arithmetic number, because the mean of its divisors is an integer number (412882450).

Almost surely, 2^825764899 is an apocalyptic number.

825764899 is a deficient number, since it is larger than the sum of its proper divisors (1).

825764899 is an equidigital number, since it uses as much as digits as its factorization.

825764899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 58.

The square root of 825764899 is about 28736.1253303225. The cubic root of 825764899 is about 938.1784927560.

The spelling of 825764899 in words is "eight hundred twenty-five million, seven hundred sixty-four thousand, eight hundred ninety-nine".