1522743660025 has 27 divisors (see below), whose sum is σ = 2196542339469. Its totient is φ = 1044137465280.

The previous prime is 1522743660023. The next prime is 1522743660073. The reversal of 1522743660025 is 5200663472251.

The square root of 1522743660025 is 1233995.

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

It can be written as a sum of positive squares in 4 ways, for example, as 782338481001 + 740405179024 = 884499^2 + 860468^2 .

It is not a de Polignac number, because 1522743660025 - 2¹ = 1522743660023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1522743660023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 43172197 + ... + 43207453.

Almost surely, 2^{1522743660025} is an apocalyptic number.

1522743660025 is the 1233995-th square number.

1522743660025 is the 616998-th centered octagonal number.

It is an amenable number.

1522743660025 is a deficient number, since it is larger than the sum of its proper divisors (673798679444).

1522743660025 is an frugal number, since it uses more digits than its factorization.

1522743660025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70538 (or 35269 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 1522743660025 in words is "one trillion, five hundred twenty-two billion, seven hundred forty-three million, six hundred sixty thousand, twenty-five".