1052911993225 has 9 divisors (see below), whose sum is σ = 1305617233543. Its totient is φ = 842325490120.

The previous prime is 1052911993223. The next prime is 1052911993247. The reversal of 1052911993225 is 5223991192501.

The square root of 1052911993225 is 1026115.

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

It can be written as a sum of positive squares in only one way, i.e., 379048317561 + 673863675664 = 615669^2 + 820892^2 .

It is not a de Polignac number, because 1052911993225 - 2¹ = 1052911993223 is a prime.

It is a super-2 number, since 2×1052911993225² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1052911993223) 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 8 ways as a sum of consecutive naturals, for example, 5027964 + ... + 5233186.

Almost surely, 2^{1052911993225} is an apocalyptic number.

1052911993225 is the 1026115-th square number.

1052911993225 is the 513058-th centered octagonal number.

It is an amenable number.

1052911993225 is a deficient number, since it is larger than the sum of its proper divisors (252705240318).

1052911993225 is an frugal number, since it uses more digits than its factorization.

1052911993225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410456 (or 205228 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 49.

Multiplying 1052911993225 by its sum of digits (49), we get a square (51592687668025 = 7182805²).

The spelling of 1052911993225 in words is "one trillion, fifty-two billion, nine hundred eleven million, nine hundred ninety-three thousand, two hundred twenty-five".