199077705625 has 20 divisors (see below), whose sum is σ = 253461269556. Its totient is φ = 156257192000.

The previous prime is 199077705599. The next prime is 199077705649. The reversal of 199077705625 is 526507770991.

It can be written as a sum of positive squares in 10 ways, for example, as 76211332096 + 122866373529 = 276064^2 + 350523^2 .

It is a de Polignac number, because none of the positive numbers 2^k-199077705625 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 199077705625.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 2971822 + ... + 3038071.

Almost surely, 2^199077705625 is an apocalyptic number.

It is an amenable number.

199077705625 is a deficient number, since it is larger than the sum of its proper divisors (54383563931).

199077705625 is an frugal number, since it uses more digits than its factorization.

199077705625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009966 (or 6009951 counting only the distinct ones).

The product of its (nonzero) digits is 8334900, while the sum is 58.

The spelling of 199077705625 in words is "one hundred ninety-nine billion, seventy-seven million, seven hundred five thousand, six hundred twenty-five".