3521825397 has 24 divisors (see below), whose sum is σ = 5144176128. Its totient is φ = 2321676000.

The previous prime is 3521825393. The next prime is 3521825449. The reversal of 3521825397 is 7935281253.

3521825397 is a `hidden beast` number, since 35 + 2 + 1 + 82 + 539 + 7 = 666.

It is not a de Polignac number, because 3521825397 - 2² = 3521825393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521825393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297247 + ... + 308867.

It is an arithmetic number, because the mean of its divisors is an integer number (214340672).

Almost surely, 2^3521825397 is an apocalyptic number.

It is an amenable number.

3521825397 is a deficient number, since it is larger than the sum of its proper divisors (1622350731).

3521825397 is a wasteful number, since it uses less digits than its factorization.

3521825397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12001 (or 11998 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 3521825397 is about 59344.9694329688. The cubic root of 3521825397 is about 1521.4438895464.

The spelling of 3521825397 in words is "three billion, five hundred twenty-one million, eight hundred twenty-five thousand, three hundred ninety-seven".