1025111089 has 2 divisors, whose sum is σ = 1025111090. Its totient is φ = 1025111088.

The previous prime is 1025111071. The next prime is 1025111141. The reversal of 1025111089 is 9801115201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 860835600 + 164275489 = 29340^2 + 12817^2 .

It is an emirp because it is prime and its reverse (9801115201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1025111089 - 2¹⁵ = 1025078321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1025115089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512555544 + 512555545.

It is an arithmetic number, because the mean of its divisors is an integer number (512555545).

Almost surely, 2^1025111089 is an apocalyptic number.

It is an amenable number.

1025111089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025111089 is an equidigital number, since it uses as much as digits as its factorization.

1025111089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 28.

The square root of 1025111089 is about 32017.3560588628. The cubic root of 1025111089 is about 1008.3012613770.

The spelling of 1025111089 in words is "one billion, twenty-five million, one hundred eleven thousand, eighty-nine".