11537525 has 12 divisors (see below), whose sum is σ = 14694372. Its totient is φ = 8979840.

The previous prime is 11537507. The next prime is 11537527. The reversal of 11537525 is 52573511.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 401956 + 11135569 = 634^2 + 3337^2 .

It is not a de Polignac number, because 11537525 - 2¹⁶ = 11471989 is a prime.

It is a super-2 number, since 2×11537525² = 266228966251250, which contains 22 as substring.

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 (11537527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5312 + ... + 7161.

It is an arithmetic number, because the mean of its divisors is an integer number (1224531).

Almost surely, 2^11537525 is an apocalyptic number.

It is an amenable number.

11537525 is a deficient number, since it is larger than the sum of its proper divisors (3156847).

11537525 is a wasteful number, since it uses less digits than its factorization.

11537525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12520 (or 12515 counting only the distinct ones).

The product of its digits is 5250, while the sum is 29.

The square root of 11537525 is about 3396.6932449075. The cubic root of 11537525 is about 225.9631142976.

The spelling of 11537525 in words is "eleven million, five hundred thirty-seven thousand, five hundred twenty-five".