1620015362625 has 64 divisors (see below), whose sum is σ = 3009160028160. Its totient is φ = 767195352000.

The previous prime is 1620015362611. The next prime is 1620015362663. The reversal of 1620015362625 is 5262635100261.

It is not a de Polignac number, because 1620015362625 - 2¹² = 1620015358529 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4389265 + ... + 4744014.

It is an arithmetic number, because the mean of its divisors is an integer number (47018125440).

Almost surely, 2^{1620015362625} is an apocalyptic number.

1620015362625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1620015362625 is a deficient number, since it is larger than the sum of its proper divisors (1389144665535).

1620015362625 is a wasteful number, since it uses less digits than its factorization.

1620015362625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9133351 (or 9133341 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 1620015362625 in words is "one trillion, six hundred twenty billion, fifteen million, three hundred sixty-two thousand, six hundred twenty-five".