2505529998 has 12 divisors (see below), whose sum is σ = 5428648368. Its totient is φ = 835176660.

The previous prime is 2505529969. The next prime is 2505530009. The reversal of 2505529998 is 8999255052.

2505529998 is a `hidden beast` number, since 25 + 0 + 5 + 529 + 9 + 98 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69598038 + ... + 69598073.

It is an arithmetic number, because the mean of its divisors is an integer number (452387364).

Almost surely, 2^2505529998 is an apocalyptic number.

2505529998 is an abundant number, since it is smaller than the sum of its proper divisors (2923118370).

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

2505529998 is a wasteful number, since it uses less digits than its factorization.

2505529998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139196119 (or 139196116 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 54.

The square root of 2505529998 is about 50055.2694328979. The cubic root of 2505529998 is about 1358.2087862754.

The spelling of 2505529998 in words is "two billion, five hundred five million, five hundred twenty-nine thousand, nine hundred ninety-eight".