3651825520 has 80 divisors (see below), whose sum is σ = 9789462720. Its totient is φ = 1240952832.

The previous prime is 3651825497. The next prime is 3651825581. The reversal of 3651825520 is 255281563.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 3651825520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34426 + ... + 92134.

It is an arithmetic number, because the mean of its divisors is an integer number (122368284).

Almost surely, 2^3651825520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3651825520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4894731360).

3651825520 is an abundant number, since it is smaller than the sum of its proper divisors (6137637200).

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

3651825520 is a wasteful number, since it uses less digits than its factorization.

3651825520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57842 (or 57836 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 3651825520 is about 60430.3360904107. The cubic root of 3651825520 is about 1539.9383682537.

The spelling of 3651825520 in words is "three billion, six hundred fifty-one million, eight hundred twenty-five thousand, five hundred twenty".