11778625 has 8 divisors (see below), whose sum is σ = 14699880. Its totient is φ = 9422800.

The previous prime is 11778619. The next prime is 11778629. The reversal of 11778625 is 52687711.

11778625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 3432²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 11778624 = 1^2 + 3432^2 .

It is not a de Polignac number, because 11778625 - 2²³ = 3390017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11778629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46990 + ... + 47239.

It is an arithmetic number, because the mean of its divisors is an integer number (1837485).

Almost surely, 2^11778625 is an apocalyptic number.

It is an amenable number.

11778625 is a deficient number, since it is larger than the sum of its proper divisors (2921255).

11778625 is an frugal number, since it uses more digits than its factorization.

11778625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94244 (or 94234 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 11778625 is about 3432.0001456876. Note that the first 3 decimals coincide. The cubic root of 11778625 is about 227.5262619121.

It can be divided in two parts, 11778 and 625, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 11778625 in words is "eleven million, seven hundred seventy-eight thousand, six hundred twenty-five".