1345105120225 has 24 divisors (see below), whose sum is σ = 1672188598080. Its totient is φ = 1073338201920.

The previous prime is 1345105120147. The next prime is 1345105120273. The reversal of 1345105120225 is 5220215015431.

It is not a de Polignac number, because 1345105120225 - 2⁹ = 1345105119713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45608334 + ... + 45637816.

It is an arithmetic number, because the mean of its divisors is an integer number (69674524920).

Almost surely, 2^{1345105120225} is an apocalyptic number.

It is an amenable number.

1345105120225 is a deficient number, since it is larger than the sum of its proper divisors (327083477855).

1345105120225 is a wasteful number, since it uses less digits than its factorization.

1345105120225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34089 (or 34084 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 1345105120225 in words is "one trillion, three hundred forty-five billion, one hundred five million, one hundred twenty thousand, two hundred twenty-five".