1217983125 has 80 divisors (see below), whose sum is σ = 2159308800. Its totient is φ = 608760000.

The previous prime is 1217983121. The next prime is 1217983133. The reversal of 1217983125 is 5213897121.

It is a happy number.

It is not a de Polignac number, because 1217983125 - 2² = 1217983121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217983121) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6376780 + ... + 6376970.

It is an arithmetic number, because the mean of its divisors is an integer number (26991360).

Almost surely, 2^1217983125 is an apocalyptic number.

1217983125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1217983125 is a deficient number, since it is larger than the sum of its proper divisors (941325675).

1217983125 is a wasteful number, since it uses less digits than its factorization.

1217983125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 397 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 1217983125 is about 34899.6149692228. The cubic root of 1217983125 is about 1067.9405827245.

The spelling of 1217983125 in words is "one billion, two hundred seventeen million, nine hundred eighty-three thousand, one hundred twenty-five".