11956329025 has 27 divisors (see below), whose sum is σ = 15660830883. Its totient is φ = 9053766000.

The previous prime is 11956328983. The next prime is 11956329029. The reversal of 11956329025 is 52092365911.

The square root of 11956329025 is 109345.

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

It can be written as a sum of positive squares in only one way, i.e., 4304278449 + 7652050576 = 65607^2 + 87476^2 .

It is not a de Polignac number, because 11956329025 - 2²⁵ = 11922774593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11956329029) 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, 10387200 + ... + 10388350.

Almost surely, 2^11956329025 is an apocalyptic number.

11956329025 is the 109345-th square number.

11956329025 is the 54673-rd centered octagonal number.

It is an amenable number.

11956329025 is a deficient number, since it is larger than the sum of its proper divisors (3704501858).

11956329025 is an frugal number, since it uses more digits than its factorization.

11956329025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350 (or 1175 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 11956329025 in words is "eleven billion, nine hundred fifty-six million, three hundred twenty-nine thousand, twenty-five".