3521542025 has 12 divisors (see below), whose sum is σ = 4406777100. Its totient is φ = 2791385280.

The previous prime is 3521541997. The next prime is 3521542067. The reversal of 3521542025 is 5202451253.

It can be written as a sum of positive squares in 6 ways, for example, as 255648121 + 3265893904 = 15989^2 + 57148^2 .

It is not a de Polignac number, because 3521542025 - 2¹⁴ = 3521525641 is a prime.

It is a super-2 number, since 2×3521542025² = 24802516467682201250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 643430 + ... + 648879.

It is an arithmetic number, because the mean of its divisors is an integer number (367231425).

Almost surely, 2^3521542025 is an apocalyptic number.

It is an amenable number.

3521542025 is a deficient number, since it is larger than the sum of its proper divisors (885235075).

3521542025 is a wasteful number, since it uses less digits than its factorization.

3521542025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292428 (or 1292423 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 3521542025 is about 59342.5818868711. The cubic root of 3521542025 is about 1521.4030824731.

Adding to 3521542025 its reverse (5202451253), we get a palindrome (8723993278).

The spelling of 3521542025 in words is "three billion, five hundred twenty-one million, five hundred forty-two thousand, twenty-five".