2557704725 has 12 divisors (see below), whose sum is σ = 3175197444. Its totient is φ = 2043813120.

The previous prime is 2557704701. The next prime is 2557704731. The reversal of 2557704725 is 5274077552.

2557704725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 277355716 + 2280349009 = 16654^2 + 47753^2 .

It is not a de Polignac number, because 2557704725 - 2²⁴ = 2540927509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36404 + ... + 80253.

It is an arithmetic number, because the mean of its divisors is an integer number (264599787).

Almost surely, 2^2557704725 is an apocalyptic number.

2557704725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2557704725 is a deficient number, since it is larger than the sum of its proper divisors (617492719).

2557704725 is a wasteful number, since it uses less digits than its factorization.

2557704725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117544 (or 117539 counting only the distinct ones).

The product of its (nonzero) digits is 686000, while the sum is 44.

The square root of 2557704725 is about 50573.7552985736. The cubic root of 2557704725 is about 1367.5717949845.

The spelling of 2557704725 in words is "two billion, five hundred fifty-seven million, seven hundred four thousand, seven hundred twenty-five".