73646016525 has 18 divisors (see below), whose sum is σ = 131908198890. Its totient is φ = 39277875360.

The previous prime is 73646016439. The next prime is 73646016539. The reversal of 73646016525 is 52561064637.

73646016525 is a `hidden beast` number, since 7 + 3 + 6 + 460 + 165 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 21706281 + 73624310244 = 4659^2 + 271338^2 .

It is not a de Polignac number, because 73646016525 - 2⁷ = 73646016397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 in 17 ways as a sum of consecutive naturals, for example, 163657590 + ... + 163658039.

Almost surely, 2^73646016525 is an apocalyptic number.

73646016525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

73646016525 is a deficient number, since it is larger than the sum of its proper divisors (58262182365).

73646016525 is a wasteful number, since it uses less digits than its factorization.

73646016525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327315645 (or 327315637 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 73646016525 in words is "seventy-three billion, six hundred forty-six million, sixteen thousand, five hundred twenty-five".