11111220025 has 12 divisors (see below), whose sum is σ = 13782600000. Its totient is φ = 8885952080.

The previous prime is 11111220019. The next prime is 11111220037. The reversal of 11111220025 is 52002211111.

11111220025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11111220025 - 2¹¹ = 11111217977 is a prime.

It is a super-2 number, since 2×11111220025² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111219990 and 11111220008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 876 + ... + 149074.

It is an arithmetic number, because the mean of its divisors is an integer number (1148550000).

Almost surely, 2^11111220025 is an apocalyptic number.

It is an amenable number.

11111220025 is a deficient number, since it is larger than the sum of its proper divisors (2671379975).

11111220025 is a wasteful number, since it uses less digits than its factorization.

11111220025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151208 (or 151203 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 11111220025 its reverse (52002211111), we get a palindrome (63113431136).

The spelling of 11111220025 in words is "eleven billion, one hundred eleven million, two hundred twenty thousand, twenty-five".