11451145225 has 24 divisors (see below), whose sum is σ = 15664669272. Its totient is φ = 8249971200.

The previous prime is 11451145187. The next prime is 11451145241. The reversal of 11451145225 is 52254115411.

It can be written as a sum of positive squares in 12 ways, for example, as 11123499024 + 327646201 = 105468^2 + 18101^2 .

It is not a de Polignac number, because 11451145225 - 2¹¹ = 11451143177 is a prime.

It is a super-2 number, since 2×11451145225² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 416362 + ... + 443011.

It is an arithmetic number, because the mean of its divisors is an integer number (652694553).

Almost surely, 2^11451145225 is an apocalyptic number.

It is an amenable number.

11451145225 is a deficient number, since it is larger than the sum of its proper divisors (4213524047).

11451145225 is a wasteful number, since it uses less digits than its factorization.

11451145225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859437 (or 859432 counting only the distinct ones).

The product of its digits is 8000, while the sum is 31.

The spelling of 11451145225 in words is "eleven billion, four hundred fifty-one million, one hundred forty-five thousand, two hundred twenty-five".