3625461561 has 8 divisors (see below), whose sum is σ = 4900167520. Its totient is φ = 2383864992.

The previous prime is 3625461557. The next prime is 3625461629. The reversal of 3625461561 is 1651645263.

3625461561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3625461561 - 2² = 3625461557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3625465561) 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, 8277091 + ... + 8277528.

It is an arithmetic number, because the mean of its divisors is an integer number (612520940).

Almost surely, 2^3625461561 is an apocalyptic number.

It is an amenable number.

3625461561 is a deficient number, since it is larger than the sum of its proper divisors (1274705959).

3625461561 is a wasteful number, since it uses less digits than its factorization.

3625461561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16554695.

The product of its digits is 129600, while the sum is 39.

The square root of 3625461561 is about 60211.8058274289. The cubic root of 3625461561 is about 1536.2236083116.

The spelling of 3625461561 in words is "three billion, six hundred twenty-five million, four hundred sixty-one thousand, five hundred sixty-one".