11729825 has 6 divisors (see below), whose sum is σ = 14545014. Its totient is φ = 9383840.

The previous prime is 11729807. The next prime is 11729827. The reversal of 11729825 is 52892711.

It can be written as a sum of positive squares in 3 ways, for example, as 3389281 + 8340544 = 1841^2 + 2888^2 .

It is not a de Polignac number, because 11729825 - 2⁶ = 11729761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11729827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 234572 + ... + 234621.

It is an arithmetic number, because the mean of its divisors is an integer number (2424169).

Almost surely, 2^11729825 is an apocalyptic number.

It is an amenable number.

11729825 is a deficient number, since it is larger than the sum of its proper divisors (2815189).

11729825 is an equidigital number, since it uses as much as digits as its factorization.

11729825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469203 (or 469198 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 11729825 is about 3424.8832096876. The cubic root of 11729825 is about 227.2116057456.

The spelling of 11729825 in words is "eleven million, seven hundred twenty-nine thousand, eight hundred twenty-five".