3551625 has 96 divisors (see below), whose sum is σ = 8176896. Its totient is φ = 1440000.

The previous prime is 3551621. The next prime is 3551627. The reversal of 3551625 is 5261553.

3551625 is a `hidden beast` number, since 35 + 5 + 1 + 625 = 666.

It is not a de Polignac number, because 3551625 - 2² = 3551621 is a prime.

It is a super-2 number, since 2×3551625² = 25228080281250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551621) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 86605 + ... + 86645.

It is an arithmetic number, because the mean of its divisors is an integer number (85176).

Almost surely, 2^3551625 is an apocalyptic number.

3551625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3551625 is an abundant number, since it is smaller than the sum of its proper divisors (4625271).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3551625 is a wasteful number, since it uses less digits than its factorization.

3551625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 67 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 3551625 is about 1884.5755490295. The cubic root of 3551625 is about 152.5723028999.

The spelling of 3551625 in words is "three million, five hundred fifty-one thousand, six hundred twenty-five".