907665871225 has 9 divisors (see below), whose sum is σ = 1125511587183. Its totient is φ = 726128886120.

The previous prime is 907665871199. The next prime is 907665871237. The reversal of 907665871225 is 522178566709.

The square root of 907665871225 is 952715.

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

It can be written as a sum of positive squares in only one way, i.e., 326759713641 + 580906157584 = 571629^2 + 762172^2 .

It is not a de Polignac number, because 907665871225 - 2¹⁷ = 907665740153 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 907665871225.

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 8 ways as a sum of consecutive naturals, for example, 4668304 + ... + 4858846.

Almost surely, 2^907665871225 is an apocalyptic number.

907665871225 is the 952715-th square number.

907665871225 is the 476358-th centered octagonal number.

It is an amenable number.

907665871225 is a deficient number, since it is larger than the sum of its proper divisors (217845715958).

907665871225 is an frugal number, since it uses more digits than its factorization.

907665871225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381096 (or 190548 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 907665871225 in words is "nine hundred seven billion, six hundred sixty-five million, eight hundred seventy-one thousand, two hundred twenty-five".