825238101 has 4 divisors (see below), whose sum is σ = 1100317472. Its totient is φ = 550158732.

The previous prime is 825238097. The next prime is 825238109. The reversal of 825238101 is 101832528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 825238101 - 2² = 825238097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825238109) 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, 137539681 + ... + 137539686.

It is an arithmetic number, because the mean of its divisors is an integer number (275079368).

Almost surely, 2^825238101 is an apocalyptic number.

It is an amenable number.

825238101 is a deficient number, since it is larger than the sum of its proper divisors (275079371).

825238101 is a wasteful number, since it uses less digits than its factorization.

825238101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275079370.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 825238101 is about 28726.9577400740. The cubic root of 825238101 is about 937.9789461740.

The spelling of 825238101 in words is "eight hundred twenty-five million, two hundred thirty-eight thousand, one hundred one".