133287025 has 9 divisors (see below), whose sum is σ = 165347521. Its totient is φ = 106583440.

The previous prime is 133286999. The next prime is 133287031. The reversal of 133287025 is 520782331.

The square root of 133287025 is 11545.

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 6589489 + 126697536 = 2567^2 + 11256^2 .

It is not a de Polignac number, because 133287025 - 2⁷ = 133286897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 56571 + ... + 58879.

Almost surely, 2^133287025 is an apocalyptic number.

133287025 is the 11545-th square number.

133287025 is the 5773-rd centered octagonal number.

It is an amenable number.

133287025 is a deficient number, since it is larger than the sum of its proper divisors (32060496).

133287025 is an frugal number, since it uses more digits than its factorization.

133287025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628 (or 2314 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The cubic root of 133287025 is about 510.8138038928.

The spelling of 133287025 in words is "one hundred thirty-three million, two hundred eighty-seven thousand, twenty-five".