2605525902 has 72 divisors (see below), whose sum is σ = 6575794056. Its totient is φ = 743438304.

The previous prime is 2605525891. The next prime is 2605525907. The reversal of 2605525902 is 2095255062.

2605525902 is a `hidden beast` number, since 2 + 60 + 5 + 5 + 2 + 590 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605525907) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 877873 + ... + 880835.

It is an arithmetic number, because the mean of its divisors is an integer number (91330473).

Almost surely, 2^2605525902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2605525902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3287897028).

2605525902 is an abundant number, since it is smaller than the sum of its proper divisors (3970268154).

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

2605525902 is a wasteful number, since it uses less digits than its factorization.

2605525902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3982 (or 3972 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 2605525902 is about 51044.3523026789. The cubic root of 2605525902 is about 1376.0423438694.

The spelling of 2605525902 in words is "two billion, six hundred five million, five hundred twenty-five thousand, nine hundred two".