1325342644 has 24 divisors (see below), whose sum is σ = 2585036160. Its totient is φ = 590864256.

The previous prime is 1325342591. The next prime is 1325342647. The reversal of 1325342644 is 4462435231.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325342647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511612 + ... + 514195.

It is an arithmetic number, because the mean of its divisors is an integer number (107709840).

Almost surely, 2^1325342644 is an apocalyptic number.

It is an amenable number.

1325342644 is a deficient number, since it is larger than the sum of its proper divisors (1259693516).

1325342644 is a wasteful number, since it uses less digits than its factorization.

1325342644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025847 (or 1025845 counting only the distinct ones).

The product of its digits is 69120, while the sum is 34.

The square root of 1325342644 is about 36405.2557194700. The cubic root of 1325342644 is about 1098.4392863836.

Adding to 1325342644 its reverse (4462435231), we get a palindrome (5787777875).

The spelling of 1325342644 in words is "one billion, three hundred twenty-five million, three hundred forty-two thousand, six hundred forty-four".