11291825169 has 15 divisors (see below), whose sum is σ = 16869463897. Its totient is φ = 7527245868.

The previous prime is 11291825147. The next prime is 11291825189. The reversal of 11291825169 is 96152819211.

The square root of 11291825169 is 106263.

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

11291825169 is a `hidden beast` number, since 1 + 129 + 1 + 8 + 2 + 516 + 9 = 666.

It is not a de Polignac number, because 11291825169 - 2¹⁵ = 11291792401 is a prime.

It is a super-2 number, since 2×11291825169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11291825189) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 950464 + ... + 962270.

Almost surely, 2^11291825169 is an apocalyptic number.

11291825169 is the 106263-rd square number.

11291825169 is the 53132-nd centered octagonal number.

It is an amenable number.

11291825169 is a deficient number, since it is larger than the sum of its proper divisors (5577638728).

11291825169 is an frugal number, since it uses more digits than its factorization.

11291825169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23626 (or 11810 counting only the distinct ones).

The product of its digits is 77760, while the sum is 45.

The spelling of 11291825169 in words is "eleven billion, two hundred ninety-one million, eight hundred twenty-five thousand, one hundred sixty-nine".