825134377 has 2 divisors, whose sum is σ = 825134378. Its totient is φ = 825134376.

The previous prime is 825134371. The next prime is 825134417. The reversal of 825134377 is 773431528.

It is a happy number.

It is an a-pointer prime, because the next prime (825134417) can be obtained adding 825134377 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 782936361 + 42198016 = 27981^2 + 6496^2 .

It is a cyclic number.

It is not a de Polignac number, because 825134377 - 2²⁷ = 690916649 is a prime.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 825134377 parts by 40623 straight cuts.

It is not a weakly prime, because it can be changed into another prime (825134371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412567188 + 412567189.

It is an arithmetic number, because the mean of its divisors is an integer number (412567189).

Almost surely, 2^825134377 is an apocalyptic number.

It is an amenable number.

825134377 is a deficient number, since it is larger than the sum of its proper divisors (1).

825134377 is an equidigital number, since it uses as much as digits as its factorization.

825134377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 825134377 is about 28725.1523407623. The cubic root of 825134377 is about 937.9396464033.

The spelling of 825134377 in words is "eight hundred twenty-five million, one hundred thirty-four thousand, three hundred seventy-seven".