25884391213 has 4 divisors (see below), whose sum is σ = 25887764448. Its totient is φ = 25881017980.

The previous prime is 25884391193. The next prime is 25884391219. The reversal of 25884391213 is 31219348852.

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 a de Polignac number, because none of the positive numbers 2^k-25884391213 is a prime.

It is a super-2 number, since 2×25884391213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25884391219) 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, 1675081 + ... + 1690462.

It is an arithmetic number, because the mean of its divisors is an integer number (6471941112).

Almost surely, 2^25884391213 is an apocalyptic number.

It is an amenable number.

25884391213 is a deficient number, since it is larger than the sum of its proper divisors (3373235).

25884391213 is an equidigital number, since it uses as much as digits as its factorization.

25884391213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373234.

The product of its digits is 414720, while the sum is 46.

The spelling of 25884391213 in words is "twenty-five billion, eight hundred eighty-four million, three hundred ninety-one thousand, two hundred thirteen".