27212345225 has 48 divisors (see below), whose sum is σ = 36773896320. Its totient is φ = 19856256000.

The previous prime is 27212345221. The next prime is 27212345231. The reversal of 27212345225 is 52254321272.

It is not a de Polignac number, because 27212345225 - 2² = 27212345221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27212345221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9713825 + ... + 9716625.

It is an arithmetic number, because the mean of its divisors is an integer number (766122840).

Almost surely, 2^27212345225 is an apocalyptic number.

27212345225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27212345225 is a deficient number, since it is larger than the sum of its proper divisors (9561551095).

27212345225 is a wasteful number, since it uses less digits than its factorization.

27212345225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170 (or 3165 counting only the distinct ones).

The product of its digits is 67200, while the sum is 35.

Adding to 27212345225 its reverse (52254321272), we get a palindrome (79466666497).

The spelling of 27212345225 in words is "twenty-seven billion, two hundred twelve million, three hundred forty-five thousand, two hundred twenty-five".