213894113225 has 12 divisors (see below), whose sum is σ = 285630908556. Its totient is φ = 157952575680.

The previous prime is 213894113183. The next prime is 213894113249. The reversal of 213894113225 is 522311498312.

It is a happy number.

213894113225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 93198320656 + 120695792569 = 305284^2 + 347413^2 .

It is not a de Polignac number, because 213894113225 - 2²⁴ = 213877336009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 329067542 + ... + 329068191.

It is an arithmetic number, because the mean of its divisors is an integer number (23802575713).

Almost surely, 2^213894113225 is an apocalyptic number.

213894113225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213894113225 is a deficient number, since it is larger than the sum of its proper divisors (71736795331).

213894113225 is a wasteful number, since it uses less digits than its factorization.

213894113225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658135756 (or 658135751 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The spelling of 213894113225 in words is "two hundred thirteen billion, eight hundred ninety-four million, one hundred thirteen thousand, two hundred twenty-five".