25586421213 has 16 divisors (see below), whose sum is σ = 34321210880. Its totient is φ = 16954871616.

The previous prime is 25586421169. The next prime is 25586421221. The reversal of 25586421213 is 31212468552.

It is not a de Polignac number, because 25586421213 - 2¹⁶ = 25586355677 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 (25586421713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386331 + ... + 447687.

It is an arithmetic number, because the mean of its divisors is an integer number (2145075680).

Almost surely, 2^25586421213 is an apocalyptic number.

It is an amenable number.

25586421213 is a deficient number, since it is larger than the sum of its proper divisors (8734789667).

25586421213 is a wasteful number, since it uses less digits than its factorization.

25586421213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62196.

The product of its digits is 115200, while the sum is 39.

Adding to 25586421213 its reverse (31212468552), we get a palindrome (56798889765).

The spelling of 25586421213 in words is "twenty-five billion, five hundred eighty-six million, four hundred twenty-one thousand, two hundred thirteen".