1322625312 has 54 divisors (see below), whose sum is σ = 3762971667. Its totient is φ = 440669376.

The previous prime is 1322625307. The next prime is 1322625319. The reversal of 1322625312 is 2135262231.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

1322625312 is a `hidden beast` number, since 1 + 3 + 2 + 2 + 625 + 31 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 661312656 + 661312656 = 25716^2 + 25716^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25716.

It is not an unprimeable number, because it can be changed into a prime (1322625319) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 616113 + ... + 618255.

Almost surely, 2^1322625312 is an apocalyptic number.

1322625312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1322625312 is an abundant number, since it is smaller than the sum of its proper divisors (2440346355).

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

1322625312 is an frugal number, since it uses more digits than its factorization.

1322625312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302 (or 2148 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1322625312 is about 36367.9159699865. The cubic root of 1322625312 is about 1097.6880677012.

Adding to 1322625312 its reverse (2135262231), we get a palindrome (3457887543).

The spelling of 1322625312 in words is "one billion, three hundred twenty-two million, six hundred twenty-five thousand, three hundred twelve".