11125397529 has 9 divisors (see below), whose sum is σ = 16070475733. Its totient is φ = 7416720732.

The previous prime is 11125397489. The next prime is 11125397531. The reversal of 11125397529 is 92579352111.

The square root of 11125397529 is 105477.

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

11125397529 is a `hidden beast` number, since 1 + 11 + 25 + 3 + 97 + 529 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 11125397529 - 2¹⁷ = 11125266457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11125397539) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 298852 + ... + 334010.

Almost surely, 2^11125397529 is an apocalyptic number.

11125397529 is the 105477-th square number.

11125397529 is the 52739-th centered octagonal number.

It is an amenable number.

11125397529 is a deficient number, since it is larger than the sum of its proper divisors (4945078204).

11125397529 is an frugal number, since it uses more digits than its factorization.

11125397529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70324 (or 35162 counting only the distinct ones).

The product of its digits is 170100, while the sum is 45.

The spelling of 11125397529 in words is "eleven billion, one hundred twenty-five million, three hundred ninety-seven thousand, five hundred twenty-nine".