825621207 has 4 divisors (see below), whose sum is σ = 1100828280. Its totient is φ = 550414136.

The previous prime is 825621197. The next prime is 825621217. The reversal of 825621207 is 702126528.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (825621197) and next prime (825621217).

It is a cyclic number.

It is not a de Polignac number, because 825621207 - 2⁶ = 825621143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825621217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137603532 + ... + 137603537.

It is an arithmetic number, because the mean of its divisors is an integer number (275207070).

Almost surely, 2^825621207 is an apocalyptic number.

825621207 is a deficient number, since it is larger than the sum of its proper divisors (275207073).

825621207 is a wasteful number, since it uses less digits than its factorization.

825621207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275207072.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 825621207 is about 28733.6250236548. The cubic root of 825621207 is about 938.1240718733.

The spelling of 825621207 in words is "eight hundred twenty-five million, six hundred twenty-one thousand, two hundred seven".