3525021505 has 4 divisors (see below), whose sum is σ = 4230025812. Its totient is φ = 2820017200.

The previous prime is 3525021497. The next prime is 3525021527. The reversal of 3525021505 is 5051205253.

3525021505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1096404544 + 2428616961 = 33112^2 + 49281^2 .

It is not a de Polignac number, because 3525021505 - 2³ = 3525021497 is a prime.

It is a super-2 number, since 2×3525021505² = 24851553221424930050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352502146 + ... + 352502155.

It is an arithmetic number, because the mean of its divisors is an integer number (1057506453).

Almost surely, 2^3525021505 is an apocalyptic number.

It is an amenable number.

3525021505 is a deficient number, since it is larger than the sum of its proper divisors (705004307).

3525021505 is an equidigital number, since it uses as much as digits as its factorization.

3525021505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705004306.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 3525021505 is about 59371.8915396840. The cubic root of 3525021505 is about 1521.9039945762.

Adding to 3525021505 its reverse (5051205253), we get a palindrome (8576226758).

The spelling of 3525021505 in words is "three billion, five hundred twenty-five million, twenty-one thousand, five hundred five".