3525105621 has 8 divisors (see below), whose sum is σ = 4704748384. Its totient is φ = 2347766640.

The previous prime is 3525105613. The next prime is 3525105641. The reversal of 3525105621 is 1265015253.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3525105621 - 2³ = 3525105613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3525105611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572371 + ... + 578496.

It is an arithmetic number, because the mean of its divisors is an integer number (588093548).

Almost surely, 2^3525105621 is an apocalyptic number.

It is an amenable number.

3525105621 is a deficient number, since it is larger than the sum of its proper divisors (1179642763).

3525105621 is a wasteful number, since it uses less digits than its factorization.

3525105621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151891.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 3525105621 is about 59372.5999178072. The cubic root of 3525105621 is about 1521.9160999831.

The spelling of 3525105621 in words is "three billion, five hundred twenty-five million, one hundred five thousand, six hundred twenty-one".