145023205522 has 16 divisors (see below), whose sum is σ = 236587747032. Its totient is φ = 66271075200.

The previous prime is 145023205517. The next prime is 145023205667. The reversal of 145023205522 is 225502320541.

It can be written as a sum of positive squares in 4 ways, for example, as 113473985881 + 31549219641 = 336859^2 + 177621^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27610323 + ... + 27615574.

Almost surely, 2^145023205522 is an apocalyptic number.

145023205522 is a deficient number, since it is larger than the sum of its proper divisors (91564541510).

145023205522 is a wasteful number, since it uses less digits than its factorization.

145023205522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55226013.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 145023205522 in words is "one hundred forty-five billion, twenty-three million, two hundred five thousand, five hundred twenty-two".