2542905889 has 2 divisors, whose sum is σ = 2542905890. Its totient is φ = 2542905888.

The previous prime is 2542905881. The next prime is 2542905901. The reversal of 2542905889 is 9885092452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2522048400 + 20857489 = 50220^2 + 4567^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542905889 - 2³ = 2542905881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2542905881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271452944 + 1271452945.

It is an arithmetic number, because the mean of its divisors is an integer number (1271452945).

Almost surely, 2^2542905889 is an apocalyptic number.

It is an amenable number.

2542905889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542905889 is an equidigital number, since it uses as much as digits as its factorization.

2542905889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 52.

The square root of 2542905889 is about 50427.2336044721. The cubic root of 2542905889 is about 1364.9291091917.

The spelling of 2542905889 in words is "two billion, five hundred forty-two million, nine hundred five thousand, eight hundred eighty-nine".