90823424825 has 24 divisors (see below), whose sum is σ = 131138267328. Its totient is φ = 61103839680.

The previous prime is 90823424821. The next prime is 90823424831. The reversal of 90823424825 is 52842432809.

It is not a de Polignac number, because 90823424825 - 2² = 90823424821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90823424825.

It is not an unprimeable number, because it can be changed into a prime (90823424821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4886867 + ... + 4905416.

It is an arithmetic number, because the mean of its divisors is an integer number (5464094472).

Almost surely, 2^90823424825 is an apocalyptic number.

It is an amenable number.

90823424825 is a deficient number, since it is larger than the sum of its proper divisors (40314842503).

90823424825 is a wasteful number, since it uses less digits than its factorization.

90823424825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9792353 (or 9792348 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 90823424825 in words is "ninety billion, eight hundred twenty-three million, four hundred twenty-four thousand, eight hundred twenty-five".