687525001 has 2 divisors, whose sum is σ = 687525002. Its totient is φ = 687525000.

The previous prime is 687524987. The next prime is 687525017. The reversal of 687525001 is 100525786.

687525001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 470846601 + 216678400 = 21699^2 + 14720^2 .

It is a cyclic number.

It is not a de Polignac number, because 687525001 - 2²⁹ = 150654089 is a prime.

It is not a weakly prime, because it can be changed into another prime (687525401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343762500 + 343762501.

It is an arithmetic number, because the mean of its divisors is an integer number (343762501).

Almost surely, 2^687525001 is an apocalyptic number.

It is an amenable number.

687525001 is a deficient number, since it is larger than the sum of its proper divisors (1).

687525001 is an equidigital number, since it uses as much as digits as its factorization.

687525001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 687525001 is about 26220.6979502835. The cubic root of 687525001 is about 882.5977821550.

The spelling of 687525001 in words is "six hundred eighty-seven million, five hundred twenty-five thousand, one".