25430646113 has 4 divisors (see below), whose sum is σ = 26250989568. Its totient is φ = 24610302660.

The previous prime is 25430646097. The next prime is 25430646139. The reversal of 25430646113 is 31164603452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25430646113 - 2⁴ = 25430646097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25430646173) 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, 410171681 + ... + 410171742.

It is an arithmetic number, because the mean of its divisors is an integer number (6562747392).

Almost surely, 2^25430646113 is an apocalyptic number.

It is an amenable number.

25430646113 is a deficient number, since it is larger than the sum of its proper divisors (820343455).

25430646113 is an equidigital number, since it uses as much as digits as its factorization.

25430646113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820343454.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 25430646113 in words is "twenty-five billion, four hundred thirty million, six hundred forty-six thousand, one hundred thirteen".