2573665705 has 8 divisors (see below), whose sum is σ = 3325968072. Its totient is φ = 1900553088.

The previous prime is 2573665687. The next prime is 2573665709. The reversal of 2573665705 is 5075663752.

It can be written as a sum of positive squares in 4 ways, for example, as 24324624 + 2549341081 = 4932^2 + 50491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2573665705 - 2⁵ = 2573665673 is a prime.

It is a super-2 number, since 2×2573665705² = 13247510322186294050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2573665709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19797364 + ... + 19797493.

It is an arithmetic number, because the mean of its divisors is an integer number (415746009).

Almost surely, 2^2573665705 is an apocalyptic number.

It is an amenable number.

2573665705 is a deficient number, since it is larger than the sum of its proper divisors (752302367).

2573665705 is a wasteful number, since it uses less digits than its factorization.

2573665705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39594875.

The product of its (nonzero) digits is 1323000, while the sum is 46.

The square root of 2573665705 is about 50731.3089225973. The cubic root of 2573665705 is about 1370.4106082704.

The spelling of 2573665705 in words is "two billion, five hundred seventy-three million, six hundred sixty-five thousand, seven hundred five".