1399382532025 has 27 divisors (see below), whose sum is σ = 1753008010221. Its totient is φ = 1108154389440.

The previous prime is 1399382532011. The next prime is 1399382532073. The reversal of 1399382532025 is 5202352839931.

The square root of 1399382532025 is 1182955.

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 40880391721 + 1358502140304 = 202189^2 + 1165548^2 .

It is not a de Polignac number, because 1399382532025 - 2³⁹ = 849626718137 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, 609220677 + ... + 609222973.

Almost surely, 2^{1399382532025} is an apocalyptic number.

1399382532025 is the 1182955-th square number.

1399382532025 is the 591478-th centered octagonal number.

It is an amenable number.

1399382532025 is a deficient number, since it is larger than the sum of its proper divisors (353625478196).

1399382532025 is an frugal number, since it uses more digits than its factorization.

1399382532025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 52.

The spelling of 1399382532025 in words is "one trillion, three hundred ninety-nine billion, three hundred eighty-two million, five hundred thirty-two thousand, twenty-five".