3661125500 has 24 divisors (see below), whose sum is σ = 7995899184. Its totient is φ = 1464450000.

The previous prime is 3661125499. The next prime is 3661125509. The reversal of 3661125500 is 55211663.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661125509) 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, 3660626 + ... + 3661625.

It is an arithmetic number, because the mean of its divisors is an integer number (333162466).

Almost surely, 2^3661125500 is an apocalyptic number.

It is an amenable number.

3661125500 is an abundant number, since it is smaller than the sum of its proper divisors (4334773684).

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

3661125500 is a wasteful number, since it uses less digits than its factorization.

3661125500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322270 (or 7322258 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 3661125500 is about 60507.2351045724. The cubic root of 3661125500 is about 1541.2444963667.

The spelling of 3661125500 in words is "three billion, six hundred sixty-one million, one hundred twenty-five thousand, five hundred".