2533257989 has 2 divisors, whose sum is σ = 2533257990. Its totient is φ = 2533257988.

The previous prime is 2533257971. The next prime is 2533258033. The reversal of 2533257989 is 9897523352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2384661889 + 148596100 = 48833^2 + 12190^2 .

It is a cyclic number.

It is not a de Polignac number, because 2533257989 - 2²⁸ = 2264822533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2533257989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2533257949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1266628994 + 1266628995.

It is an arithmetic number, because the mean of its divisors is an integer number (1266628995).

Almost surely, 2^2533257989 is an apocalyptic number.

It is an amenable number.

2533257989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2533257989 is an equidigital number, since it uses as much as digits as its factorization.

2533257989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 53.

The square root of 2533257989 is about 50331.4810928508. The cubic root of 2533257989 is about 1363.2007205509.

The spelling of 2533257989 in words is "two billion, five hundred thirty-three million, two hundred fifty-seven thousand, nine hundred eighty-nine".