694772985125 has 16 divisors (see below), whose sum is σ = 918081199152. Its totient is φ = 523123187200.

The previous prime is 694772985107. The next prime is 694772985163. The reversal of 694772985125 is 521589277496.

It can be written as a sum of positive squares in 8 ways, for example, as 295107524644 + 399665460481 = 543238^2 + 632191^2 .

It is not a de Polignac number, because 694772985125 - 2²⁴ = 694756207909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163473872 + ... + 163478121.

It is an arithmetic number, because the mean of its divisors is an integer number (57380074947).

Almost surely, 2^694772985125 is an apocalyptic number.

It is an amenable number.

694772985125 is a deficient number, since it is larger than the sum of its proper divisors (223308214027).

694772985125 is a wasteful number, since it uses less digits than its factorization.

694772985125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326952025 (or 326952015 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 65.

The spelling of 694772985125 in words is "six hundred ninety-four billion, seven hundred seventy-two million, nine hundred eighty-five thousand, one hundred twenty-five".