11892505 has 4 divisors (see below), whose sum is σ = 14271012. Its totient is φ = 9514000.

The previous prime is 11892479. The next prime is 11892521. The reversal of 11892505 is 50529811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2039184 + 9853321 = 1428^2 + 3139^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11892505 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189246 + ... + 1189255.

It is an arithmetic number, because the mean of its divisors is an integer number (3567753).

Almost surely, 2^11892505 is an apocalyptic number.

It is an amenable number.

11892505 is a deficient number, since it is larger than the sum of its proper divisors (2378507).

11892505 is an equidigital number, since it uses as much as digits as its factorization.

11892505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378506.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 11892505 is about 3448.5511450463. The cubic root of 11892505 is about 228.2571800436.

The spelling of 11892505 in words is "eleven million, eight hundred ninety-two thousand, five hundred five".