1011115525 has 24 divisors (see below), whose sum is σ = 1445603904. Its totient is φ = 687187200.

The previous prime is 1011115519. The next prime is 1011115531. The reversal of 1011115525 is 5255111101.

It is an interprime number because it is at equal distance from previous prime (1011115519) and next prime (1011115531).

It is not a de Polignac number, because 1011115525 - 2⁵ = 1011115493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011115496 and 1011115505.

It is a congruent 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, 5791 + ... + 45340.

It is an arithmetic number, because the mean of its divisors is an integer number (60233496).

Almost surely, 2^1011115525 is an apocalyptic number.

It is an amenable number.

1011115525 is a deficient number, since it is larger than the sum of its proper divisors (434488379).

1011115525 is a wasteful number, since it uses less digits than its factorization.

1011115525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51261 (or 51256 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 22.

The square root of 1011115525 is about 31798.0427856810. The cubic root of 1011115525 is about 1003.6915308315.

Adding to 1011115525 its reverse (5255111101), we get a palindrome (6266226626).

The spelling of 1011115525 in words is "one billion, eleven million, one hundred fifteen thousand, five hundred twenty-five".