3240725145 has 16 divisors (see below), whose sum is σ = 5925897600. Its totient is φ = 1481474304.

The previous prime is 3240725141. The next prime is 3240725161. The reversal of 3240725145 is 5415270423.

It is not a de Polignac number, because 3240725145 - 2² = 3240725141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3240725141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15431920 + ... + 15432129.

It is an arithmetic number, because the mean of its divisors is an integer number (370368600).

Almost surely, 2^3240725145 is an apocalyptic number.

3240725145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3240725145 is a deficient number, since it is larger than the sum of its proper divisors (2685172455).

3240725145 is a wasteful number, since it uses less digits than its factorization.

3240725145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30864064.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 3240725145 is about 56927.3672762056. The cubic root of 3240725145 is about 1479.8376290398.

Adding to 3240725145 its reverse (5415270423), we get a palindrome (8655995568).

The spelling of 3240725145 in words is "three billion, two hundred forty million, seven hundred twenty-five thousand, one hundred forty-five".