6111945895225 has 27 divisors (see below), whose sum is σ = 7651960810221. Its totient is φ = 4842811696800.

The previous prime is 6111945895177. The next prime is 6111945895259. The reversal of 6111945895225 is 5225985491116.

The square root of 6111945895225 is 2472235.

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 436840361721 + 5675105533504 = 660939^2 + 2382248^2 .

It is not a de Polignac number, because 6111945895225 - 2¹⁵ = 6111945862457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6111945895225.

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, 1322643415 + ... + 1322648035.

Almost surely, 2^{6111945895225} is an apocalyptic number.

6111945895225 is the 2472235-th square number.

6111945895225 is the 1236118-th centered octagonal number.

It is an amenable number.

6111945895225 is a deficient number, since it is larger than the sum of its proper divisors (1540014914996).

6111945895225 is an frugal number, since it uses more digits than its factorization.

6111945895225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9466 (or 4733 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 58.

The spelling of 6111945895225 in words is "six trillion, one hundred eleven billion, nine hundred forty-five million, eight hundred ninety-five thousand, two hundred twenty-five".