25898231057 has 4 divisors (see below), whose sum is σ = 26386876980. Its totient is φ = 25409585136.

The previous prime is 25898231027. The next prime is 25898231131. The reversal of 25898231057 is 75013289852.

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 22716819841 + 3181411216 = 150721^2 + 56404^2 .

It is a cyclic number.

It is not a de Polignac number, because 25898231057 - 2¹⁴ = 25898214673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25898230996 and 25898231014.

It is not an unprimeable number, because it can be changed into a prime (25898231027) 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, 244322882 + ... + 244322987.

It is an arithmetic number, because the mean of its divisors is an integer number (6596719245).

Almost surely, 2^25898231057 is an apocalyptic number.

It is an amenable number.

25898231057 is a deficient number, since it is larger than the sum of its proper divisors (488645923).

25898231057 is an equidigital number, since it uses as much as digits as its factorization.

25898231057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488645922.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 25898231057 in words is "twenty-five billion, eight hundred ninety-eight million, two hundred thirty-one thousand, fifty-seven".