2575645897 has 4 divisors (see below), whose sum is σ = 2809795536. Its totient is φ = 2341496260.

The previous prime is 2575645873. The next prime is 2575645931. The reversal of 2575645897 is 7985465752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2575645897 - 2¹¹ = 2575643849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2575645837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117074803 + ... + 117074824.

It is an arithmetic number, because the mean of its divisors is an integer number (702448884).

Almost surely, 2^2575645897 is an apocalyptic number.

It is an amenable number.

2575645897 is a deficient number, since it is larger than the sum of its proper divisors (234149639).

2575645897 is a wasteful number, since it uses less digits than its factorization.

2575645897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234149638.

The product of its digits is 21168000, while the sum is 58.

The square root of 2575645897 is about 50750.8216386691. The cubic root of 2575645897 is about 1370.7619852244.

The spelling of 2575645897 in words is "two billion, five hundred seventy-five million, six hundred forty-five thousand, eight hundred ninety-seven".