1213525422 has 32 divisors (see below), whose sum is σ = 2699667360. Its totient is φ = 404066880.

The previous prime is 1213525409. The next prime is 1213525427. The reversal of 1213525422 is 2245253121.

1213525422 is a `hidden beast` number, since 1 + 213 + 5 + 25 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213525427) 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, 39672 + ... + 63252.

It is an arithmetic number, because the mean of its divisors is an integer number (84364605).

Almost surely, 2^1213525422 is an apocalyptic number.

1213525422 is an abundant number, since it is smaller than the sum of its proper divisors (1486141938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213525422 is a wasteful number, since it uses less digits than its factorization.

1213525422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24545 (or 24539 counting only the distinct ones).

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

The square root of 1213525422 is about 34835.6917829975. The cubic root of 1213525422 is about 1066.6361362138.

Adding to 1213525422 its reverse (2245253121), we get a palindrome (3458778543).

The spelling of 1213525422 in words is "one billion, two hundred thirteen million, five hundred twenty-five thousand, four hundred twenty-two".