1399832091025 has 27 divisors (see below), whose sum is σ = 1777420808379. Its totient is φ = 1093623516720.

The previous prime is 1399832091019. The next prime is 1399832091061. The reversal of 1399832091025 is 5201902389931.

The square root of 1399832091025 is 1183145.

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

It can be written as a sum of positive squares in only one way, i.e., 503939552769 + 895892538256 = 709887^2 + 946516^2 .

It is not a de Polignac number, because 1399832091025 - 2⁷ = 1399832090897 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, 254373424 + ... + 254378926.

Almost surely, 2^{1399832091025} is an apocalyptic number.

1399832091025 is the 1183145-th square number.

1399832091025 is the 591573-rd centered octagonal number.

It is an amenable number.

1399832091025 is a deficient number, since it is larger than the sum of its proper divisors (377588717354).

1399832091025 is an frugal number, since it uses more digits than its factorization.

1399832091025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11102 (or 5551 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 52.

The spelling of 1399832091025 in words is "one trillion, three hundred ninety-nine billion, eight hundred thirty-two million, ninety-one thousand, twenty-five".