11252515943529 has 27 divisors (see below), whose sum is σ = 18907407060087. Its totient is φ = 6429968856864.

The previous prime is 11252515943509. The next prime is 11252515943531. The reversal of 11252515943529 is 92534951525211.

It is a happy number.

The square root of 11252515943529 is 3354477.

It is a perfect power (a square), and thus also a powerful number.

11252515943529 is a `hidden beast` number, since 1 + 1 + 2 + 5 + 2 + 515 + 94 + 35 + 2 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1555220997225 + 9697294946304 = 1247085^2 + 3114048^2 .

It is not a de Polignac number, because 11252515943529 - 2⁹ = 11252515943017 is a prime.

It is a super-2 number, since 2×11252515943529² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11252515943509) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 70364149 + ... + 70523885.

Almost surely, 2^{11252515943529} is an apocalyptic number.

11252515943529 is the 3354477-th square number.

11252515943529 is the 1677239-th centered octagonal number.

It is an amenable number.

11252515943529 is a deficient number, since it is larger than the sum of its proper divisors (7654891116558).

11252515943529 is an frugal number, since it uses more digits than its factorization.

11252515943529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319494 (or 159747 counting only the distinct ones).

The product of its digits is 4860000, while the sum is 54.

The spelling of 11252515943529 in words is "eleven trillion, two hundred fifty-two billion, five hundred fifteen million, nine hundred forty-three thousand, five hundred twenty-nine".