825872378 has 4 divisors (see below), whose sum is σ = 1238808570. Its totient is φ = 412936188.

The previous prime is 825872371. The next prime is 825872401. The reversal of 825872378 is 873278528.

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

It can be written as a sum of positive squares in only one way, i.e., 722910769 + 102961609 = 26887^2 + 10147^2 .

It is not an unprimeable number, because it can be changed into a prime (825872371) 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 as a sum of consecutive naturals, namely, 206468093 + ... + 206468096.

Almost surely, 2^825872378 is an apocalyptic number.

825872378 is a deficient number, since it is larger than the sum of its proper divisors (412936192).

825872378 is a wasteful number, since it uses less digits than its factorization.

825872378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412936191.

The product of its digits is 1505280, while the sum is 50.

The square root of 825872378 is about 28737.9953719810. The cubic root of 825872378 is about 938.2191944585.

The spelling of 825872378 in words is "eight hundred twenty-five million, eight hundred seventy-two thousand, three hundred seventy-eight".