825320390 has 8 divisors (see below), whose sum is σ = 1485576720. Its totient is φ = 330128152.

The previous prime is 825320311. The next prime is 825320411. The reversal of 825320390 is 93023528.

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

It is a super-2 number, since 2×825320390² = 1362307492299504200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41266010 + ... + 41266029.

It is an arithmetic number, because the mean of its divisors is an integer number (185697090).

Almost surely, 2^825320390 is an apocalyptic number.

825320390 is a deficient number, since it is larger than the sum of its proper divisors (660256330).

825320390 is a wasteful number, since it uses less digits than its factorization.

825320390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82532046.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 825320390 is about 28728.3899653287. The cubic root of 825320390 is about 938.0101221397.

The spelling of 825320390 in words is "eight hundred twenty-five million, three hundred twenty thousand, three hundred ninety".