2011155133525 has 12 divisors (see below), whose sum is σ = 2493867934692. Its totient is φ = 1608901159040.

The previous prime is 2011155133523. The next prime is 2011155133529. The reversal of 2011155133525 is 5253315511102.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5175795249 + 2005979338276 = 71943^2 + 1416326^2 .

It is not a de Polignac number, because 2011155133525 - 2¹ = 2011155133523 is a prime.

It is a super-2 number, since 2×2011155133525² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011155133523) 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, 1339239 + ... + 2411611.

It is an arithmetic number, because the mean of its divisors is an integer number (207822327891).

Almost surely, 2^{2011155133525} is an apocalyptic number.

2011155133525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2011155133525 is a deficient number, since it is larger than the sum of its proper divisors (482712801167).

2011155133525 is a wasteful number, since it uses less digits than its factorization.

2011155133525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147400 (or 1147395 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 2011155133525 in words is "two trillion, eleven billion, one hundred fifty-five million, one hundred thirty-three thousand, five hundred twenty-five".