1217607625 has 16 divisors (see below), whose sum is σ = 1636466832. Its totient is φ = 899155200.

The previous prime is 1217607617. The next prime is 1217607631. The reversal of 1217607625 is 5267067121.

It can be written as a sum of positive squares in 8 ways, for example, as 924889744 + 292717881 = 30412^2 + 17109^2 .

It is not a de Polignac number, because 1217607625 - 2³ = 1217607617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373024 + ... + 376273.

It is an arithmetic number, because the mean of its divisors is an integer number (102279177).

Almost surely, 2^1217607625 is an apocalyptic number.

It is an amenable number.

1217607625 is a deficient number, since it is larger than the sum of its proper divisors (418859207).

1217607625 is an equidigital number, since it uses as much as digits as its factorization.

1217607625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749325 (or 749315 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 1217607625 is about 34894.2348390103. The cubic root of 1217607625 is about 1067.8308239772.

The spelling of 1217607625 in words is "one billion, two hundred seventeen million, six hundred seven thousand, six hundred twenty-five".