87069051725 has 24 divisors (see below), whose sum is σ = 114489857448. Its totient is φ = 65458483200.

The previous prime is 87069051721. The next prime is 87069051733. The reversal of 87069051725 is 52715096078.

It can be written as a sum of positive squares in 12 ways, for example, as 4216034761 + 82853016964 = 64931^2 + 287842^2 .

It is not a de Polignac number, because 87069051725 - 2² = 87069051721 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87069051721) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 125957 + ... + 435893.

It is an arithmetic number, because the mean of its divisors is an integer number (4770410727).

Almost surely, 2^87069051725 is an apocalyptic number.

87069051725 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87069051725 is a deficient number, since it is larger than the sum of its proper divisors (27420805723).

87069051725 is a wasteful number, since it uses less digits than its factorization.

87069051725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310625 (or 310620 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 87069051725 in words is "eighty-seven billion, sixty-nine million, fifty-one thousand, seven hundred twenty-five".