2011122525 has 48 divisors (see below), whose sum is σ = 3542612544. Its totient is φ = 1003207680.

The previous prime is 2011122521. The next prime is 2011122539. The reversal of 2011122525 is 5252211102.

It is not a de Polignac number, because 2011122525 - 2² = 2011122521 is a prime.

It is a super-2 number, since 2×2011122525² = 8089227621124751250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011122521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 202987 + ... + 212663.

It is an arithmetic number, because the mean of its divisors is an integer number (73804428).

Almost surely, 2^2011122525 is an apocalyptic number.

2011122525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2011122525 is a deficient number, since it is larger than the sum of its proper divisors (1531490019).

2011122525 is a wasteful number, since it uses less digits than its factorization.

2011122525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9870 (or 9865 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2011122525 is about 44845.5407482171. The cubic root of 2011122525 is about 1262.2523175197.

Adding to 2011122525 its reverse (5252211102), we get a palindrome (7263333627).

The spelling of 2011122525 in words is "two billion, eleven million, one hundred twenty-two thousand, five hundred twenty-five".