1528227526225 has 27 divisors (see below), whose sum is σ = 1902720938769. Its totient is φ = 1217622326400.

The previous prime is 1528227526213. The next prime is 1528227526237. The reversal of 1528227526225 is 5226257228251.

The square root of 1528227526225 is 1236215.

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

It is an interprime number because it is at equal distance from previous prime (1528227526213) and next prime (1528227526237).

It can be written as a sum of positive squares in 4 ways, for example, as 467154479169 + 1061073047056 = 683487^2 + 1030084^2 .

It is not a de Polignac number, because 1528227526225 - 2²⁵ = 1528193971793 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, 2676405190 + ... + 2676405760.

Almost surely, 2^{1528227526225} is an apocalyptic number.

1528227526225 is the 1236215-th square number.

1528227526225 is the 618108-th centered octagonal number.

It is an amenable number.

1528227526225 is a deficient number, since it is larger than the sum of its proper divisors (374493412544).

1528227526225 is an frugal number, since it uses more digits than its factorization.

1528227526225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018 (or 1009 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 49.

Multiplying 1528227526225 by its sum of digits (49), we get a square (74883148785025 = 8653505²).

The spelling of 1528227526225 in words is "one trillion, five hundred twenty-eight billion, two hundred twenty-seven million, five hundred twenty-six thousand, two hundred twenty-five".