825418973 has 2 divisors, whose sum is σ = 825418974. Its totient is φ = 825418972.

The previous prime is 825418943. The next prime is 825419017. The reversal of 825418973 is 379814528.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 712783204 + 112635769 = 26698^2 + 10613^2 .

It is a cyclic number.

It is not a de Polignac number, because 825418973 - 2⁸ = 825418717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825418933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412709486 + 412709487.

It is an arithmetic number, because the mean of its divisors is an integer number (412709487).

Almost surely, 2^825418973 is an apocalyptic number.

It is an amenable number.

825418973 is a deficient number, since it is larger than the sum of its proper divisors (1).

825418973 is an equidigital number, since it uses as much as digits as its factorization.

825418973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 825418973 is about 28730.1056907210. The cubic root of 825418973 is about 938.0474685131.

The spelling of 825418973 in words is "eight hundred twenty-five million, four hundred eighteen thousand, nine hundred seventy-three".