3725501521 has 8 divisors (see below), whose sum is σ = 4442834304. Its totient is φ = 3054448320.

The previous prime is 3725501447. The next prime is 3725501537. The reversal of 3725501521 is 1251055273.

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

It is not a de Polignac number, because 3725501521 - 2⁷ = 3725501393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3725501561) 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, 11569720 + ... + 11570041.

It is an arithmetic number, because the mean of its divisors is an integer number (555354288).

Almost surely, 2^3725501521 is an apocalyptic number.

It is an amenable number.

3725501521 is a deficient number, since it is larger than the sum of its proper divisors (717332783).

3725501521 is a wasteful number, since it uses less digits than its factorization.

3725501521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23139791.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 3725501521 is about 61036.8865605054. The cubic root of 3725501521 is about 1550.2256377726.

Adding to 3725501521 its reverse (1251055273), we get a palindrome (4976556794).

The spelling of 3725501521 in words is "three billion, seven hundred twenty-five million, five hundred one thousand, five hundred twenty-one".