145225517605 has 32 divisors (see below), whose sum is σ = 209715148800. Its totient is φ = 94312164672.

The previous prime is 145225517599. The next prime is 145225517663. The reversal of 145225517605 is 506715522541.

It is a cyclic number.

It is not a de Polignac number, because 145225517605 - 2⁷ = 145225517477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2176936 + ... + 2242654.

It is an arithmetic number, because the mean of its divisors is an integer number (6553598400).

Almost surely, 2^145225517605 is an apocalyptic number.

It is an amenable number.

145225517605 is a deficient number, since it is larger than the sum of its proper divisors (64489631195).

145225517605 is a wasteful number, since it uses less digits than its factorization.

145225517605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69073.

The product of its (nonzero) digits is 420000, while the sum is 43.

The spelling of 145225517605 in words is "one hundred forty-five billion, two hundred twenty-five million, five hundred seventeen thousand, six hundred five".