11525985 has 12 divisors (see below), whose sum is σ = 19978452. Its totient is φ = 6147168.

The previous prime is 11525977. The next prime is 11525993. The reversal of 11525985 is 58952511.

It is a happy number.

11525985 is a `hidden beast` number, since 11 + 52 + 598 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (11525977) and next prime (11525993).

It can be written as a sum of positive squares in 2 ways, for example, as 3283344 + 8242641 = 1812^2 + 2871^2 .

It is not a de Polignac number, because 11525985 - 2³ = 11525977 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128022 + ... + 128111.

It is an arithmetic number, because the mean of its divisors is an integer number (1664871).

Almost surely, 2^11525985 is an apocalyptic number.

11525985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11525985 is a deficient number, since it is larger than the sum of its proper divisors (8452467).

11525985 is a wasteful number, since it uses less digits than its factorization.

11525985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256144 (or 256141 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 11525985 is about 3394.9941089787. The cubic root of 11525985 is about 225.8877519701.

The spelling of 11525985 in words is "eleven million, five hundred twenty-five thousand, nine hundred eighty-five".