651225 has 24 divisors (see below), whose sum is σ = 1135840. Its totient is φ = 328320.

The previous prime is 651223. The next prime is 651239. The reversal of 651225 is 522156.

It is not a de Polignac number, because 651225 - 2¹ = 651223 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (651221) 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, 1197 + ... + 1653.

2⁶⁵¹²²⁵ is an apocalyptic number.

It is an amenable number.

651225 is a deficient number, since it is larger than the sum of its proper divisors (484615).

651225 is a wasteful number, since it uses less digits than its factorization.

651225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 484 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 651225 is about 806.9851299745. The cubic root of 651225 is about 86.6782939693.

The spelling of 651225 in words is "six hundred fifty-one thousand, two hundred twenty-five".