825229931 has 4 divisors (see below), whose sum is σ = 825287592. Its totient is φ = 825172272.

The previous prime is 825229883. The next prime is 825229939. The reversal of 825229931 is 139922528.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 825229931 - 2¹⁴ = 825213547 is a prime.

It is a super-2 number, since 2×825229931² = 1362008878036529522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825229939) by changing a digit.

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, 10760 + ... + 42026.

It is an arithmetic number, because the mean of its divisors is an integer number (206321898).

Almost surely, 2^825229931 is an apocalyptic number.

825229931 is a deficient number, since it is larger than the sum of its proper divisors (57661).

825229931 is a wasteful number, since it uses less digits than its factorization.

825229931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57660.

The product of its digits is 77760, while the sum is 41.

The square root of 825229931 is about 28726.8155387958. The cubic root of 825229931 is about 937.9758507792.

It can be divided in two parts, 8252 and 29931, that added together give a palindrome (38183).

The spelling of 825229931 in words is "eight hundred twenty-five million, two hundred twenty-nine thousand, nine hundred thirty-one".