3521040525 has 72 divisors (see below), whose sum is σ = 6426463680. Its totient is φ = 1842520320.

The previous prime is 3521040521. The next prime is 3521040541. The reversal of 3521040525 is 5250401253.

It is a happy number.

3521040525 is a `hidden beast` number, since 35 + 2 + 104 + 0 + 525 = 666.

It is not a de Polignac number, because 3521040525 - 2² = 3521040521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521040521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3118161 + ... + 3119289.

It is an arithmetic number, because the mean of its divisors is an integer number (89256440).

Almost surely, 2^3521040525 is an apocalyptic number.

It is an amenable number.

3521040525 is a deficient number, since it is larger than the sum of its proper divisors (2905423155).

3521040525 is a wasteful number, since it uses less digits than its factorization.

3521040525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 3521040525 is about 59338.3562714708. The cubic root of 3521040525 is about 1521.3308584434.

Adding to 3521040525 its reverse (5250401253), we get a palindrome (8771441778).

The spelling of 3521040525 in words is "three billion, five hundred twenty-one million, forty thousand, five hundred twenty-five".