1325220743 has 32 divisors (see below), whose sum is σ = 1723023360. Its totient is φ = 988968960.

The previous prime is 1325220733. The next prime is 1325220761. The reversal of 1325220743 is 3470225231.

It is not a de Polignac number, because 1325220743 - 2⁴ = 1325220727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325220713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281255 + ... + 285927.

It is an arithmetic number, because the mean of its divisors is an integer number (53844480).

Almost surely, 2^1325220743 is an apocalyptic number.

1325220743 is a deficient number, since it is larger than the sum of its proper divisors (397802617).

1325220743 is a wasteful number, since it uses less digits than its factorization.

1325220743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4847.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 1325220743 is about 36403.5814584225. The cubic root of 1325220743 is about 1098.4056083121.

Adding to 1325220743 its reverse (3470225231), we get a palindrome (4795445974).

The spelling of 1325220743 in words is "one billion, three hundred twenty-five million, two hundred twenty thousand, seven hundred forty-three".