51885225 has 96 divisors (see below), whose sum is σ = 111104000. Its totient is φ = 23250240.

The previous prime is 51885221. The next prime is 51885233. The reversal of 51885225 is 52258815.

51885225 is a `hidden beast` number, since 51 + 88 + 522 + 5 = 666.

It is not a de Polignac number, because 51885225 - 2² = 51885221 is a prime.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 51885225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51885221) 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, 373206 + ... + 373344.

Almost surely, 2^51885225 is an apocalyptic number.

It is an amenable number.

51885225 is an abundant number, since it is smaller than the sum of its proper divisors (59218775).

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

51885225 is a wasteful number, since it uses less digits than its factorization.

51885225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 233 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 51885225 is about 7203.1399403316. The cubic root of 51885225 is about 372.9762986663.

The spelling of 51885225 in words is "fifty-one million, eight hundred eighty-five thousand, two hundred twenty-five".