11311625 has 16 divisors (see below), whose sum is σ = 15205008. Its totient is φ = 8352000.

The previous prime is 11311589. The next prime is 11311661. The reversal of 11311625 is 52611311.

It is an interprime number because it is at equal distance from previous prime (11311589) and next prime (11311661).

It can be written as a sum of positive squares in 8 ways, for example, as 4145296 + 7166329 = 2036^2 + 2677^2 .

It is not a de Polignac number, because 11311625 - 2¹⁸ = 11049481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11311597 and 11311606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1856 + ... + 5105.

It is an arithmetic number, because the mean of its divisors is an integer number (950313).

Almost surely, 2^11311625 is an apocalyptic number.

It is an amenable number.

11311625 is a deficient number, since it is larger than the sum of its proper divisors (3893383).

11311625 is an equidigital number, since it uses as much as digits as its factorization.

11311625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989 (or 6979 counting only the distinct ones).

The product of its digits is 180, while the sum is 20.

The square root of 11311625 is about 3363.2759327774. The cubic root of 11311625 is about 224.4786281972.

Adding to 11311625 its reverse (52611311), we get a palindrome (63922936).

The spelling of 11311625 in words is "eleven million, three hundred eleven thousand, six hundred twenty-five".