3720436625 has 8 divisors (see below), whose sum is σ = 4643105064. Its totient is φ = 2976349200.

The previous prime is 3720436613. The next prime is 3720436631. The reversal of 3720436625 is 5266340273.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 95433361 + 3625003264 = 9769^2 + 60208^2 .

It is not a de Polignac number, because 3720436625 - 2¹⁶ = 3720371089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14881622 + ... + 14881871.

It is an arithmetic number, because the mean of its divisors is an integer number (580388133).

Almost surely, 2^3720436625 is an apocalyptic number.

It is an amenable number.

3720436625 is a deficient number, since it is larger than the sum of its proper divisors (922668439).

3720436625 is an equidigital number, since it uses as much as digits as its factorization.

3720436625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29763508 (or 29763498 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 38.

The square root of 3720436625 is about 60995.3819973283. The cubic root of 3720436625 is about 1549.5227979469.

Adding to 3720436625 its reverse (5266340273), we get a palindrome (8986776898).

The spelling of 3720436625 in words is "three billion, seven hundred twenty million, four hundred thirty-six thousand, six hundred twenty-five".