11525610213 has 18 divisors (see below), whose sum is σ = 18027238866. Its totient is φ = 7092682272.

The previous prime is 11525610209. The next prime is 11525610227. The reversal of 11525610213 is 31201652511.

11525610213 is a `hidden beast` number, since 1 + 1 + 5 + 25 + 610 + 21 + 3 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 3090564 + 11522519649 = 1758^2 + 107343^2 .

It is not a de Polignac number, because 11525610213 - 2² = 11525610209 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11525610013) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3787306 + ... + 3790347.

Almost surely, 2^11525610213 is an apocalyptic number.

11525610213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11525610213 is a deficient number, since it is larger than the sum of its proper divisors (6501628653).

11525610213 is a wasteful number, since it uses less digits than its factorization.

11525610213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7577685 (or 7577669 counting only the distinct ones).

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

The spelling of 11525610213 in words is "eleven billion, five hundred twenty-five million, six hundred ten thousand, two hundred thirteen".