25875542635381 has 8 divisors (see below), whose sum is σ = 26049357696600. Its totient is φ = 25701729623808.

The previous prime is 25875542635373. The next prime is 25875542635417. The reversal of 25875542635381 is 18353624557852.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 260212212100 + 25615330423281 = 510110^2 + 5061159^2 .

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 25875542635381 - 2³ = 25875542635373 is a prime.

It is a super-2 number, since 2×25875542635381² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25875542635321) 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, 31525065 + ... + 32335441.

It is an arithmetic number, because the mean of its divisors is an integer number (3256169712075).

Almost surely, 2^{25875542635381} is an apocalyptic number.

It is an amenable number.

25875542635381 is a deficient number, since it is larger than the sum of its proper divisors (173815061219).

25875542635381 is a wasteful number, since it uses less digits than its factorization.

25875542635381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024823.

The product of its digits is 241920000, while the sum is 64.

The spelling of 25875542635381 in words is "twenty-five trillion, eight hundred seventy-five billion, five hundred forty-two million, six hundred thirty-five thousand, three hundred eighty-one".