87687586147225 has 27 divisors (see below), whose sum is σ = 109046614781559. Its totient is φ = 69948065150400.

The previous prime is 87687586147181. The next prime is 87687586147261. The reversal of 87687586147225 is 52274168578678.

The square root of 87687586147225 is 9364165.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 13933773443209 + 73753812704016 = 3732797^2 + 8588004^2 .

It is not a de Polignac number, because 87687586147225 - 2¹³ = 87687586139033 is a prime.

It is a super-2 number, since 2×87687586147225² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17464165215 + ... + 17464170235.

Almost surely, 2^{87687586147225} is an apocalyptic number.

87687586147225 is the 9364165-th square number.

87687586147225 is the 4682083-rd centered octagonal number.

It is an amenable number.

87687586147225 is a deficient number, since it is larger than the sum of its proper divisors (21359028634334).

87687586147225 is an frugal number, since it uses more digits than its factorization.

87687586147225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10798 (or 5399 counting only the distinct ones).

The product of its digits is 2528870400, while the sum is 76.

The spelling of 87687586147225 in words is "eighty-seven trillion, six hundred eighty-seven billion, five hundred eighty-six million, one hundred forty-seven thousand, two hundred twenty-five".