213549696825 has 24 divisors (see below), whose sum is σ = 353082782208. Its totient is φ = 113888671680.

The previous prime is 213549696823. The next prime is 213549696859. The reversal of 213549696825 is 528696945312.

It is not a de Polignac number, because 213549696825 - 2¹ = 213549696823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213549696823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2846952 + ... + 2920998.

It is an arithmetic number, because the mean of its divisors is an integer number (14711782592).

Almost surely, 2^213549696825 is an apocalyptic number.

213549696825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213549696825 is a deficient number, since it is larger than the sum of its proper divisors (139533085383).

213549696825 is a wasteful number, since it uses less digits than its factorization.

213549696825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112513 (or 112508 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 60.

It can be divided in two parts, 21354 and 9696825, that added together give a palindrome (9718179).

The spelling of 213549696825 in words is "two hundred thirteen billion, five hundred forty-nine million, six hundred ninety-six thousand, eight hundred twenty-five".