1345725217 has 8 divisors (see below), whose sum is σ = 1437696800. Its totient is φ = 1255868064.

The previous prime is 1345725211. The next prime is 1345725233. The reversal of 1345725217 is 7125275431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1345725217 - 2¹⁵ = 1345692449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345725211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527292 + ... + 529837.

It is an arithmetic number, because the mean of its divisors is an integer number (179712100).

Almost surely, 2^1345725217 is an apocalyptic number.

It is an amenable number.

1345725217 is a deficient number, since it is larger than the sum of its proper divisors (91971583).

1345725217 is a wasteful number, since it uses less digits than its factorization.

1345725217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057215.

The product of its digits is 58800, while the sum is 37.

The square root of 1345725217 is about 36684.1275894630. The cubic root of 1345725217 is about 1104.0416653677.

The spelling of 1345725217 in words is "one billion, three hundred forty-five million, seven hundred twenty-five thousand, two hundred seventeen".