2557792385 has 8 divisors (see below), whose sum is σ = 3070040616. Its totient is φ = 2045774080.

The previous prime is 2557792381. The next prime is 2557792387. The reversal of 2557792385 is 5832977552.

It can be written as a sum of positive squares in 4 ways, for example, as 242642929 + 2315149456 = 15577^2 + 48116^2 .

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

It is not a de Polignac number, because 2557792385 - 2² = 2557792381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2557792381) 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, 31976 + ... + 78345.

It is an arithmetic number, because the mean of its divisors is an integer number (383755077).

Almost surely, 2^2557792385 is an apocalyptic number.

It is an amenable number.

2557792385 is a deficient number, since it is larger than the sum of its proper divisors (512248231).

2557792385 is a wasteful number, since it uses less digits than its factorization.

2557792385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114963.

The product of its digits is 5292000, while the sum is 53.

The square root of 2557792385 is about 50574.6219461896. The cubic root of 2557792385 is about 1367.5874183639.

The spelling of 2557792385 in words is "two billion, five hundred fifty-seven million, seven hundred ninety-two thousand, three hundred eighty-five".