2573257549 has 24 divisors (see below), whose sum is σ = 2753674560. Its totient is φ = 2403880512.

The previous prime is 2573257541. The next prime is 2573257553. The reversal of 2573257549 is 9457523752.

It is not a de Polignac number, because 2573257549 - 2³ = 2573257541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2573257541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4522137 + ... + 4522705.

It is an arithmetic number, because the mean of its divisors is an integer number (114736440).

Almost surely, 2^2573257549 is an apocalyptic number.

It is an amenable number.

2573257549 is a deficient number, since it is larger than the sum of its proper divisors (180417011).

2573257549 is a wasteful number, since it uses less digits than its factorization.

2573257549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 778 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 49.

The square root of 2573257549 is about 50727.2860401579. The cubic root of 2573257549 is about 1370.3381602595.

The spelling of 2573257549 in words is "two billion, five hundred seventy-three million, two hundred fifty-seven thousand, five hundred forty-nine".