25126375013 has 4 divisors (see below), whose sum is σ = 25348732428. Its totient is φ = 24904017600.

The previous prime is 25126374997. The next prime is 25126375031. The reversal of 25126375013 is 31057362152.

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 445336609 + 24681038404 = 21103^2 + 157102^2 .

It is a cyclic number.

It is not a de Polignac number, because 25126375013 - 2⁴ = 25126374997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25126375063) 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, 111178538 + ... + 111178763.

It is an arithmetic number, because the mean of its divisors is an integer number (6337183107).

Almost surely, 2^25126375013 is an apocalyptic number.

It is an amenable number.

25126375013 is a deficient number, since it is larger than the sum of its proper divisors (222357415).

25126375013 is a wasteful number, since it uses less digits than its factorization.

25126375013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222357414.

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 25126375013 in words is "twenty-five billion, one hundred twenty-six million, three hundred seventy-five thousand, thirteen".