145025446645 has 4 divisors (see below), whose sum is σ = 174030535980. Its totient is φ = 116020357312.

The previous prime is 145025446637. The next prime is 145025446649. The reversal of 145025446645 is 546644520541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102804238161 + 42221208484 = 320631^2 + 205478^2 .

It is a cyclic number.

It is not a de Polignac number, because 145025446645 - 2³ = 145025446637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145025446595 and 145025446604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145025446649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14502544660 + ... + 14502544669.

It is an arithmetic number, because the mean of its divisors is an integer number (43507633995).

Almost surely, 2^145025446645 is an apocalyptic number.

It is an amenable number.

145025446645 is a deficient number, since it is larger than the sum of its proper divisors (29005089335).

145025446645 is an equidigital number, since it uses as much as digits as its factorization.

145025446645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29005089334.

The product of its (nonzero) digits is 2304000, while the sum is 46.

The spelling of 145025446645 in words is "one hundred forty-five billion, twenty-five million, four hundred forty-six thousand, six hundred forty-five".