1445442525540 has 72 divisors (see below), whose sum is σ = 4721778924408. Its totient is φ = 355801236480.

The previous prime is 1445442525497. The next prime is 1445442525587. The reversal of 1445442525540 is 455252445441.

1445442525540 is a `hidden beast` number, since 1 + 4 + 4 + 5 + 4 + 42 + 52 + 554 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 31017549924 + 1414424975616 = 176118^2 + 1189296^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 308852901 + ... + 308857580.

It is an arithmetic number, because the mean of its divisors is an integer number (65580262839).

Almost surely, 2^{1445442525540} is an apocalyptic number.

1445442525540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445442525540 is an abundant number, since it is smaller than the sum of its proper divisors (3276336398868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445442525540 is a wasteful number, since it uses less digits than its factorization.

1445442525540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617710509 (or 617710504 counting only the distinct ones).

The product of its (nonzero) digits is 2560000, while the sum is 45.

The spelling of 1445442525540 in words is "one trillion, four hundred forty-five billion, four hundred forty-two million, five hundred twenty-five thousand, five hundred forty".