1225254213 has 24 divisors (see below), whose sum is σ = 1795422720. Its totient is φ = 805053600.

The previous prime is 1225254187. The next prime is 1225254221. The reversal of 1225254213 is 3124525221.

1225254213 is a `hidden beast` number, since 122 + 525 + 4 + 2 + 13 = 666.

It is not a de Polignac number, because 1225254213 - 2¹³ = 1225246021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225254253) 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, 519988 + ... + 522338.

It is an arithmetic number, because the mean of its divisors is an integer number (74809280).

Almost surely, 2^1225254213 is an apocalyptic number.

It is an amenable number.

1225254213 is a deficient number, since it is larger than the sum of its proper divisors (570168507).

1225254213 is a wasteful number, since it uses less digits than its factorization.

1225254213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169 (or 3166 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1225254213 is about 35003.6314258964. The cubic root of 1225254213 is about 1070.0614903376.

Adding to 1225254213 its reverse (3124525221), we get a palindrome (4349779434).

The spelling of 1225254213 in words is "one billion, two hundred twenty-five million, two hundred fifty-four thousand, two hundred thirteen".