1356444562225 has 27 divisors (see below), whose sum is σ = 1698358678947. Its totient is φ = 1074696958080.

The previous prime is 1356444562199. The next prime is 1356444562241. The reversal of 1356444562225 is 5222654446531.

The square root of 1356444562225 is 1164665.

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 1256320414449 + 100124147776 = 1120857^2 + 316424^2 .

It is not a de Polignac number, because 1356444562225 - 2³⁹ = 806688748337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 634741357 + ... + 634743493.

Almost surely, 2^{1356444562225} is an apocalyptic number.

1356444562225 is the 1164665-th square number.

1356444562225 is the 582333-rd centered octagonal number.

It is an amenable number.

1356444562225 is a deficient number, since it is larger than the sum of its proper divisors (341914116722).

1356444562225 is an frugal number, since it uses more digits than its factorization.

1356444562225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502 (or 2251 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 49.

Multiplying 1356444562225 by its sum of digits (49), we get a square (66465783549025 = 8152655²).

The spelling of 1356444562225 in words is "one trillion, three hundred fifty-six billion, four hundred forty-four million, five hundred sixty-two thousand, two hundred twenty-five".