3646251325 has 6 divisors (see below), whose sum is σ = 4521351674. Its totient is φ = 2917001040.

The previous prime is 3646251313. The next prime is 3646251347. The reversal of 3646251325 is 5231526463.

It can be written as a sum of positive squares in 3 ways, for example, as 1147651129 + 2498600196 = 33877^2 + 49986^2 .

It is not a de Polignac number, because 3646251325 - 2⁵ = 3646251293 is a prime.

It is a Duffinian number.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 72925002 + ... + 72925051.

Almost surely, 2^3646251325 is an apocalyptic number.

It is an amenable number.

3646251325 is a deficient number, since it is larger than the sum of its proper divisors (875100349).

3646251325 is a wasteful number, since it uses less digits than its factorization.

3646251325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145850063 (or 145850058 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 3646251325 is about 60384.1976430920. The cubic root of 3646251325 is about 1539.1544417902.

Adding to 3646251325 its reverse (5231526463), we get a palindrome (8877777788).

The spelling of 3646251325 in words is "three billion, six hundred forty-six million, two hundred fifty-one thousand, three hundred twenty-five".