1225745665017 has 8 divisors (see below), whose sum is σ = 1634863586400. Its totient is φ = 816895760160.

The previous prime is 1225745664973. The next prime is 1225745665049. The reversal of 1225745665017 is 7105665475221.

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

It is a de Polignac number, because none of the positive numbers 2^k-1225745665017 is a prime.

It is a super-2 number, since 2×1225745665017² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225745665057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66993459 + ... + 67011752.

It is an arithmetic number, because the mean of its divisors is an integer number (204357948300).

Almost surely, 2^{1225745665017} is an apocalyptic number.

It is an amenable number.

1225745665017 is a deficient number, since it is larger than the sum of its proper divisors (409117921383).

1225745665017 is a wasteful number, since it uses less digits than its factorization.

1225745665017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134008263.

The product of its (nonzero) digits is 3528000, while the sum is 51.

The spelling of 1225745665017 in words is "one trillion, two hundred twenty-five billion, seven hundred forty-five million, six hundred sixty-five thousand, seventeen".