3521016025 has 24 divisors (see below), whose sum is σ = 4446465408. Its totient is φ = 2765280000.

The previous prime is 3521016001. The next prime is 3521016041. The reversal of 3521016025 is 5206101253.

It is not a de Polignac number, because 3521016025 - 2¹⁷ = 3520884953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 423660 + ... + 431890.

It is an arithmetic number, because the mean of its divisors is an integer number (185269392).

Almost surely, 2^3521016025 is an apocalyptic number.

It is an amenable number.

3521016025 is a deficient number, since it is larger than the sum of its proper divisors (925449383).

3521016025 is a wasteful number, since it uses less digits than its factorization.

3521016025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553 (or 8548 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 3521016025 is about 59338.1498279143. The cubic root of 3521016025 is about 1521.3273298754.

Adding to 3521016025 its reverse (5206101253), we get a palindrome (8727117278).

The spelling of 3521016025 in words is "three billion, five hundred twenty-one million, sixteen thousand, twenty-five".