25208389213 has 12 divisors (see below), whose sum is σ = 30405689760. Its totient is φ = 20469968136.

The previous prime is 25208389139. The next prime is 25208389223. The reversal of 25208389213 is 31298380252.

It is not a de Polignac number, because 25208389213 - 2²⁹ = 24671518301 is a prime.

It is the 158772-nd Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25208389213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25208389223) by changing a digit.

It is a nontrivial repunit in base 158771.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4985283 + ... + 4990336.

It is an arithmetic number, because the mean of its divisors is an integer number (2533807480).

Almost surely, 2^25208389213 is an apocalyptic number.

It is an amenable number.

25208389213 is a deficient number, since it is larger than the sum of its proper divisors (5197300547).

25208389213 is an equidigital number, since it uses as much as digits as its factorization.

25208389213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9975664 (or 9975645 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 25208389213 in words is "twenty-five billion, two hundred eight million, three hundred eighty-nine thousand, two hundred thirteen".