1111889025 has 189 divisors, whose sum is σ = 2362424409. Its totient is φ = 518581440.

The previous prime is 1111889003. The next prime is 1111889027. The reversal of 1111889025 is 5209881111.

The square root of 1111889025 is 33345.

It is a perfect power (a square), and thus also a powerful number.

1111889025 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 4 ways, for example, as 286591041 + 825297984 = 16929^2 + 28728^2 .

It is not a de Polignac number, because 1111889025 - 2¹¹ = 1111886977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111889027) by changing a digit.

It is a polite number, since it can be written in 188 ways as a sum of consecutive naturals, for example, 58520466 + ... + 58520484.

Almost surely, 2^1111889025 is an apocalyptic number.

1111889025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1111889025 is the 33345-th square number.

1111889025 is the 16673-rd centered octagonal number.

It is an amenable number.

1111889025 is an abundant number, since it is smaller than the sum of its proper divisors (1250535384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111889025 is an equidigital number, since it uses as much as digits as its factorization.

1111889025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 36.

The cubic root of 1111889025 is about 1035.9858281952.

Multiplying 1111889025 by its sum of digits (36), we get a square (40028004900 = 200070²).

The spelling of 1111889025 in words is "one billion, one hundred eleven million, eight hundred eighty-nine thousand, twenty-five".