2573705257 has 8 divisors (see below), whose sum is σ = 2632466880. Its totient is φ = 2515448400.

The previous prime is 2573705243. The next prime is 2573705263. The reversal of 2573705257 is 7525073752.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2573705257 - 2¹⁵ = 2573672489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2573705207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115869 + ... + 136282.

It is an arithmetic number, because the mean of its divisors is an integer number (329058360).

Almost surely, 2^2573705257 is an apocalyptic number.

It is an amenable number.

2573705257 is a deficient number, since it is larger than the sum of its proper divisors (58761623).

2573705257 is a wasteful number, since it uses less digits than its factorization.

2573705257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252383.

The product of its (nonzero) digits is 514500, while the sum is 43.

The square root of 2573705257 is about 50731.6987395455. The cubic root of 2573705257 is about 1370.4176283744.

The spelling of 2573705257 in words is "two billion, five hundred seventy-three million, seven hundred five thousand, two hundred fifty-seven".