25275126389 has 4 divisors (see below), whose sum is σ = 25365073740. Its totient is φ = 25185179040.

The previous prime is 25275126353. The next prime is 25275126449. The reversal of 25275126389 is 98362157252.

It is a happy number.

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 16548764164 + 8726362225 = 128642^2 + 93415^2 .

It is a cyclic number.

It is not a de Polignac number, because 25275126389 - 2²⁰ = 25274077813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25275126319) 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, 44973254 + ... + 44973815.

It is an arithmetic number, because the mean of its divisors is an integer number (6341268435).

Almost surely, 2^25275126389 is an apocalyptic number.

It is an amenable number.

25275126389 is a deficient number, since it is larger than the sum of its proper divisors (89947351).

25275126389 is an equidigital number, since it uses as much as digits as its factorization.

25275126389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89947350.

The product of its digits is 1814400, while the sum is 50.

The spelling of 25275126389 in words is "twenty-five billion, two hundred seventy-five million, one hundred twenty-six thousand, three hundred eighty-nine".