11025630009 has 21 divisors (see below), whose sum is σ = 16535134623. Its totient is φ = 7348529952.

The previous prime is 11025629999. The next prime is 11025630017. The reversal of 11025630009 is 90003652011.

The square root of 11025630009 is 105003.

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

11025630009 is a `hidden beast` number, since 1 + 1 + 0 + 25 + 630 + 0 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7991823609 + 3033806400 = 89397^2 + 55080^2 .

It is not a de Polignac number, because 11025630009 - 2²¹ = 11023532857 is a prime.

It is a super-2 number, since 2×11025630009² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11025630019) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 2833137 + ... + 2837025.

It is an arithmetic number, because the mean of its divisors is an integer number (787387363).

Almost surely, 2^11025630009 is an apocalyptic number.

11025630009 is the 105003-rd square number.

11025630009 is the 52502-nd centered octagonal number.

It is an amenable number.

11025630009 is a deficient number, since it is larger than the sum of its proper divisors (5509504614).

11025630009 is an frugal number, since it uses more digits than its factorization.

11025630009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7796 (or 3892 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The spelling of 11025630009 in words is "eleven billion, twenty-five million, six hundred thirty thousand, nine".