3872725957897 has 4 divisors (see below), whose sum is σ = 3873254953876. Its totient is φ = 3872196961920.

The previous prime is 3872725957889. The next prime is 3872725957909. The reversal of 3872725957897 is 7987595272783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 813151259001 + 3059574698896 = 901749^2 + 1749164^2 .

It is a cyclic number.

It is not a de Polignac number, because 3872725957897 - 2³ = 3872725957889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3872725957697) 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, 264487008 + ... + 264501649.

It is an arithmetic number, because the mean of its divisors is an integer number (968313738469).

Almost surely, 2^{3872725957897} is an apocalyptic number.

It is an amenable number.

3872725957897 is a deficient number, since it is larger than the sum of its proper divisors (528995979).

3872725957897 is an equidigital number, since it uses as much as digits as its factorization.

3872725957897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528995978.

The product of its digits is 3734035200, while the sum is 79.

The spelling of 3872725957897 in words is "three trillion, eight hundred seventy-two billion, seven hundred twenty-five million, nine hundred fifty-seven thousand, eight hundred ninety-seven".