825448729654 has 4 divisors (see below), whose sum is σ = 1238173094484. Its totient is φ = 412724364826.

The previous prime is 825448729597. The next prime is 825448729667. The reversal of 825448729654 is 456927844528.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206362182412 + ... + 206362182415.

It is an arithmetic number, because the mean of its divisors is an integer number (309543273621).

Almost surely, 2^825448729654 is an apocalyptic number.

825448729654 is a deficient number, since it is larger than the sum of its proper divisors (412724364830).

825448729654 is a wasteful number, since it uses less digits than its factorization.

825448729654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412724364829.

The product of its digits is 154828800, while the sum is 64.

The spelling of 825448729654 in words is "eight hundred twenty-five billion, four hundred forty-eight million, seven hundred twenty-nine thousand, six hundred fifty-four".