25570126133 has 4 divisors (see below), whose sum is σ = 26193787788. Its totient is φ = 24946464480.

The previous prime is 25570126129. The next prime is 25570126187. The reversal of 25570126133 is 33162107552.

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 9772904164 + 15797221969 = 98858^2 + 125687^2 .

It is a cyclic number.

It is not a de Polignac number, because 25570126133 - 2² = 25570126129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25570126093 and 25570126102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25570126333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311830766 + ... + 311830847.

It is an arithmetic number, because the mean of its divisors is an integer number (6548446947).

Almost surely, 2^25570126133 is an apocalyptic number.

It is an amenable number.

25570126133 is a deficient number, since it is larger than the sum of its proper divisors (623661655).

25570126133 is an equidigital number, since it uses as much as digits as its factorization.

25570126133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623661654.

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

The spelling of 25570126133 in words is "twenty-five billion, five hundred seventy million, one hundred twenty-six thousand, one hundred thirty-three".