2485702665 has 24 divisors (see below), whose sum is σ = 4457124360. Its totient is φ = 1279993344.

The previous prime is 2485702601. The next prime is 2485702669. The reversal of 2485702665 is 5662075842.

2485702665 = 6518² + 6519² + ... + 6575².

It can be written as a sum of positive squares in 4 ways, for example, as 5363856 + 2480338809 = 2316^2 + 49803^2 .

It is not a de Polignac number, because 2485702665 - 2⁶ = 2485702601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2485702665.

It is not an unprimeable number, because it can be changed into a prime (2485702669) 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, 951072 + ... + 953681.

It is an arithmetic number, because the mean of its divisors is an integer number (185713515).

Almost surely, 2^2485702665 is an apocalyptic number.

It is an amenable number.

2485702665 is a deficient number, since it is larger than the sum of its proper divisors (1971421695).

2485702665 is a wasteful number, since it uses less digits than its factorization.

2485702665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904793 (or 1904790 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 2485702665 is about 49856.8216495998. The cubic root of 2485702665 is about 1354.6165979063.

The spelling of 2485702665 in words is "two billion, four hundred eighty-five million, seven hundred two thousand, six hundred sixty-five".