11875157221225 has 27 divisors (see below), whose sum is σ = 14863878639813. Its totient is φ = 9411479972640.

The previous prime is 11875157221157. The next prime is 11875157221267. The reversal of 11875157221225 is 52212275157811.

The square root of 11875157221225 is 3446035.

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 43538578281 + 11831618642944 = 208659^2 + 3439712^2 .

It is not a de Polignac number, because 11875157221225 - 2¹⁵ = 11875157188457 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, 1878085914 + ... + 1878092236.

Almost surely, 2^{11875157221225} is an apocalyptic number.

11875157221225 is the 3446035-th square number.

11875157221225 is the 1723018-th centered octagonal number.

It is an amenable number.

11875157221225 is a deficient number, since it is larger than the sum of its proper divisors (2988721418588).

11875157221225 is an frugal number, since it uses more digits than its factorization.

11875157221225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12874 (or 6437 counting only the distinct ones).

The product of its digits is 784000, while the sum is 49.

Multiplying 11875157221225 by its sum of digits (49), we get a square (581882703840025 = 24122245²).

The spelling of 11875157221225 in words is "eleven trillion, eight hundred seventy-five billion, one hundred fifty-seven million, two hundred twenty-one thousand, two hundred twenty-five".