3625461640 has 32 divisors (see below), whose sum is σ = 8272186560. Its totient is φ = 1429758400.

The previous prime is 3625461629. The next prime is 3625461643. The reversal of 3625461640 is 461645263.

It is a super-2 number, since 2×3625461640² = 26287944206222979200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3625461640.

It is not an unprimeable number, because it can be changed into a prime (3625461643) 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, 635446 + ... + 641125.

It is an arithmetic number, because the mean of its divisors is an integer number (258505830).

Almost surely, 2^3625461640 is an apocalyptic number.

It is an amenable number.

3625461640 is an abundant number, since it is smaller than the sum of its proper divisors (4646724920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3625461640 is a wasteful number, since it uses less digits than its factorization.

3625461640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276653 (or 1276649 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 3625461640 is about 60211.8064834464. The cubic root of 3625461640 is about 1536.2236194699.

The spelling of 3625461640 in words is "three billion, six hundred twenty-five million, four hundred sixty-one thousand, six hundred forty".