11525609 has 12 divisors (see below), whose sum is σ = 12894000. Its totient is φ = 10271808.

The previous prime is 11525603. The next prime is 11525617. The reversal of 11525609 is 90652511.

It is not a de Polignac number, because 11525609 - 2⁴ = 11525593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11525603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4442 + ... + 6540.

It is an arithmetic number, because the mean of its divisors is an integer number (1074500).

Almost surely, 2^11525609 is an apocalyptic number.

11525609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11525609 is a deficient number, since it is larger than the sum of its proper divisors (1368391).

11525609 is a wasteful number, since it uses less digits than its factorization.

11525609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152 (or 2135 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 11525609 is about 3394.9387328787. The cubic root of 11525609 is about 225.8852956444.

The spelling of 11525609 in words is "eleven million, five hundred twenty-five thousand, six hundred nine".