2557245380 has 48 divisors (see below), whose sum is σ = 5521291776. Its totient is φ = 994181760.

The previous prime is 2557245331. The next prime is 2557245391. The reversal of 2557245380 is 835427552.

2557245380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1365845 + ... + 1367715.

It is an arithmetic number, because the mean of its divisors is an integer number (115026912).

Almost surely, 2^2557245380 is an apocalyptic number.

2557245380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2557245380 is an abundant number, since it is smaller than the sum of its proper divisors (2964046396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2557245380 is a wasteful number, since it uses less digits than its factorization.

2557245380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 41.

The square root of 2557245380 is about 50569.2137569885. The cubic root of 2557245380 is about 1367.4899214633.

The spelling of 2557245380 in words is "two billion, five hundred fifty-seven million, two hundred forty-five thousand, three hundred eighty".