2525831665 has 24 divisors (see below), whose sum is σ = 3533379840. Its totient is φ = 1728302688.

The previous prime is 2525831663. The next prime is 2525831683. The reversal of 2525831665 is 5661385252.

It is not a de Polignac number, because 2525831665 - 2¹ = 2525831663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2525831663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106594 + ... + 128116.

It is an arithmetic number, because the mean of its divisors is an integer number (147224160).

Almost surely, 2^2525831665 is an apocalyptic number.

It is an amenable number.

2525831665 is a deficient number, since it is larger than the sum of its proper divisors (1007548175).

2525831665 is a wasteful number, since it uses less digits than its factorization.

2525831665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22021 (or 22014 counting only the distinct ones).

The product of its digits is 432000, while the sum is 43.

The square root of 2525831665 is about 50257.6528003447. The cubic root of 2525831665 is about 1361.8673284087.

The spelling of 2525831665 in words is "two billion, five hundred twenty-five million, eight hundred thirty-one thousand, six hundred sixty-five".