825765225 has 24 divisors (see below), whose sum is σ = 1445577120. Its totient is φ = 414501120.

The previous prime is 825765217. The next prime is 825765247. The reversal of 825765225 is 522567528.

It is a happy number.

It is not a de Polignac number, because 825765225 - 2³ = 825765217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322555 + ... + 325104.

It is an arithmetic number, because the mean of its divisors is an integer number (60232380).

Almost surely, 2^825765225 is an apocalyptic number.

825765225 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

825765225 is a deficient number, since it is larger than the sum of its proper divisors (619811895).

825765225 is a wasteful number, since it uses less digits than its factorization.

825765225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647689 (or 647684 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 825765225 is about 28736.1310026246. The cubic root of 825765225 is about 938.1786162157.

The spelling of 825765225 in words is "eight hundred twenty-five million, seven hundred sixty-five thousand, two hundred twenty-five".