90305066625 has 32 divisors (see below), whose sum is σ = 150352190976. Its totient is φ = 48135600000.

The previous prime is 90305066623. The next prime is 90305066639. The reversal of 90305066625 is 52666050309.

It is not a de Polignac number, because 90305066625 - 2¹ = 90305066623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90305066623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 608520 + ... + 742230.

It is an arithmetic number, because the mean of its divisors is an integer number (4698505968).

Almost surely, 2^90305066625 is an apocalyptic number.

It is an amenable number.

90305066625 is a deficient number, since it is larger than the sum of its proper divisors (60047124351).

90305066625 is a wasteful number, since it uses less digits than its factorization.

90305066625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135530 (or 135520 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 42.

The spelling of 90305066625 in words is "ninety billion, three hundred five million, sixty-six thousand, six hundred twenty-five".