1331225648 has 40 divisors (see below), whose sum is σ = 2754014208. Its totient is φ = 621859392.

The previous prime is 1331225617. The next prime is 1331225659. The reversal of 1331225648 is 8465221331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26240 + ... + 57887.

Almost surely, 2^1331225648 is an apocalyptic number.

It is an amenable number.

1331225648 is an abundant number, since it is smaller than the sum of its proper divisors (1422788560).

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

1331225648 is a wasteful number, since it uses less digits than its factorization.

1331225648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84201 (or 84195 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 1331225648 is about 36485.9650824807. The cubic root of 1331225648 is about 1100.0621584710.

Adding to 1331225648 its reverse (8465221331), we get a palindrome (9796446979).

The spelling of 1331225648 in words is "one billion, three hundred thirty-one million, two hundred twenty-five thousand, six hundred forty-eight".