2525805557 has 16 divisors (see below), whose sum is σ = 2779607040. Its totient is φ = 2276089200.

The previous prime is 2525805551. The next prime is 2525805593. The reversal of 2525805557 is 7555085252.

It is not a de Polignac number, because 2525805557 - 2¹⁸ = 2525543413 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 (2525805551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1716332 + ... + 1717802.

It is an arithmetic number, because the mean of its divisors is an integer number (173725440).

Almost surely, 2^2525805557 is an apocalyptic number.

It is an amenable number.

2525805557 is a deficient number, since it is larger than the sum of its proper divisors (253801483).

2525805557 is a wasteful number, since it uses less digits than its factorization.

2525805557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744.

The product of its (nonzero) digits is 700000, while the sum is 44.

The square root of 2525805557 is about 50257.3930581362. The cubic root of 2525805557 is about 1361.8626361252.

The spelling of 2525805557 in words is "two billion, five hundred twenty-five million, eight hundred five thousand, five hundred fifty-seven".