820625423924 has 6 divisors (see below), whose sum is σ = 1436094491874. Its totient is φ = 410312711960.

The previous prime is 820625423887. The next prime is 820625423993. The reversal of 820625423924 is 429324526028.

It is a happy number.

820625423924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 803206703524 + 17418720400 = 896218^2 + 131980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102578177987 + ... + 102578177994.

It is an arithmetic number, because the mean of its divisors is an integer number (239349081979).

Almost surely, 2^820625423924 is an apocalyptic number.

It is an amenable number.

820625423924 is a deficient number, since it is larger than the sum of its proper divisors (615469067950).

820625423924 is a wasteful number, since it uses less digits than its factorization.

820625423924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205156355985 (or 205156355983 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 820625423924 in words is "eight hundred twenty billion, six hundred twenty-five million, four hundred twenty-three thousand, nine hundred twenty-four".