11651625 has 24 divisors (see below), whose sum is σ = 21006024. Its totient is φ = 6213600.

The previous prime is 11651621. The next prime is 11651657. The reversal of 11651625 is 52615611.

It is a happy number.

11651625 is a `hidden beast` number, since 1 + 1 + 651 + 6 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 522729 + 11128896 = 723^2 + 3336^2 .

It is not a de Polignac number, because 11651625 - 2² = 11651621 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11651621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4054 + ... + 6303.

It is an arithmetic number, because the mean of its divisors is an integer number (875251).

Almost surely, 2^11651625 is an apocalyptic number.

11651625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11651625 is a deficient number, since it is larger than the sum of its proper divisors (9354399).

11651625 is a wasteful number, since it uses less digits than its factorization.

11651625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10378 (or 10365 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 11651625 is about 3413.4476706110. The cubic root of 11651625 is about 226.7055572927.

The spelling of 11651625 in words is "eleven million, six hundred fifty-one thousand, six hundred twenty-five".