825247378 has 8 divisors (see below), whose sum is σ = 1238829372. Its totient is φ = 412304256.

The previous prime is 825247369. The next prime is 825247391. The reversal of 825247378 is 873742528.

It can be written as a sum of positive squares in 2 ways, for example, as 642267649 + 182979729 = 25343^2 + 13527^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156475 + ... + 161662.

Almost surely, 2^825247378 is an apocalyptic number.

825247378 is a deficient number, since it is larger than the sum of its proper divisors (413581994).

825247378 is a wasteful number, since it uses less digits than its factorization.

825247378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319436.

The product of its digits is 752640, while the sum is 46.

The square root of 825247378 is about 28727.1192081629. The cubic root of 825247378 is about 937.9824609569.

The spelling of 825247378 in words is "eight hundred twenty-five million, two hundred forty-seven thousand, three hundred seventy-eight".