1445561359225 has 81 divisors (see below), whose sum is σ = 1889636694183. Its totient is φ = 1096972968960.

The previous prime is 1445561359223. The next prime is 1445561359243. The reversal of 1445561359225 is 5229531655441.

The square root of 1445561359225 is 1202315.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 360947422521 + 1084613936704 = 600789^2 + 1041448^2 .

It is not a de Polignac number, because 1445561359225 - 2¹ = 1445561359223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1445561359223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 14902694377 + ... + 14902694473.

Almost surely, 2^{1445561359225} is an apocalyptic number.

1445561359225 is the 1202315-th square number.

1445561359225 is the 601158-th centered octagonal number.

It is an amenable number.

1445561359225 is a deficient number, since it is larger than the sum of its proper divisors (444075334958).

1445561359225 is an frugal number, since it uses more digits than its factorization.

1445561359225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 206 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 52.

The spelling of 1445561359225 in words is "one trillion, four hundred forty-five billion, five hundred sixty-one million, three hundred fifty-nine thousand, two hundred twenty-five".