8451225 has 18 divisors (see below), whose sum is σ = 15137486. Its totient is φ = 4507200.

The previous prime is 8451217. The next prime is 8451239. The reversal of 8451225 is 5221548.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 576 + 8450649 = 24^2 + 2907^2 .

It is not a de Polignac number, because 8451225 - 2³ = 8451217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18556 + ... + 19005.

Almost surely, 2^8451225 is an apocalyptic number.

It is an amenable number.

8451225 is a deficient number, since it is larger than the sum of its proper divisors (6686261).

8451225 is a wasteful number, since it uses less digits than its factorization.

8451225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37577 (or 37569 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 8451225 is about 2907.0990695193. The cubic root of 8451225 is about 203.6916477611.

The spelling of 8451225 in words is "eight million, four hundred fifty-one thousand, two hundred twenty-five".