2525805553 has 4 divisors (see below), whose sum is σ = 2525951988. Its totient is φ = 2525659120.

The previous prime is 2525805551. The next prime is 2525805593. The reversal of 2525805553 is 3555085252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1154436529 + 1371369024 = 33977^2 + 37032^2 .

It is a cyclic number.

It is not a de Polignac number, because 2525805553 - 2¹ = 2525805551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2525805551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43258 + ... + 83203.

It is an arithmetic number, because the mean of its divisors is an integer number (631487997).

Almost surely, 2^2525805553 is an apocalyptic number.

It is an amenable number.

2525805553 is a deficient number, since it is larger than the sum of its proper divisors (146435).

2525805553 is a wasteful number, since it uses less digits than its factorization.

2525805553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146434.

The product of its (nonzero) digits is 300000, while the sum is 40.

The square root of 2525805553 is about 50257.3930183411. The cubic root of 2525805553 is about 1361.8626354063.

The spelling of 2525805553 in words is "two billion, five hundred twenty-five million, eight hundred five thousand, five hundred fifty-three".