25639341101 has 6 divisors (see below), whose sum is σ = 28182085806. Its totient is φ = 23308491800.

The previous prime is 25639341037. The next prime is 25639341127. The reversal of 25639341101 is 10114393652.

It can be written as a sum of positive squares in only one way, i.e., 18631977001 + 7007364100 = 136499^2 + 83710^2 .

It is not a de Polignac number, because 25639341101 - 2⁶ = 25639341037 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 (25639341131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105947570 + ... + 105947811.

It is an arithmetic number, because the mean of its divisors is an integer number (4697014301).

Almost surely, 2^25639341101 is an apocalyptic number.

It is an amenable number.

25639341101 is a deficient number, since it is larger than the sum of its proper divisors (2542744705).

25639341101 is a wasteful number, since it uses less digits than its factorization.

25639341101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211895403 (or 211895392 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 25639341101 in words is "twenty-five billion, six hundred thirty-nine million, three hundred forty-one thousand, one hundred one".