825234101 has 4 divisors (see below), whose sum is σ = 845361804. Its totient is φ = 805106400.

The previous prime is 825234061. The next prime is 825234139. The reversal of 825234101 is 101432528.

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

It can be written as a sum of positive squares in 2 ways, for example, as 186459025 + 638775076 = 13655^2 + 25274^2 .

It is a cyclic number.

It is not a de Polignac number, because 825234101 - 2²² = 821039797 is a prime.

It is a super-2 number, since 2×825234101² = 1362022642906556402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825234191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10063790 + ... + 10063871.

It is an arithmetic number, because the mean of its divisors is an integer number (211340451).

Almost surely, 2^825234101 is an apocalyptic number.

It is an amenable number.

825234101 is a deficient number, since it is larger than the sum of its proper divisors (20127703).

825234101 is a wasteful number, since it uses less digits than its factorization.

825234101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20127702.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 825234101 is about 28726.8881189731. Note that the first 3 decimals coincide. The cubic root of 825234101 is about 937.9774306834.

Adding to 825234101 its reverse (101432528), we get a palindrome (926666629).

The spelling of 825234101 in words is "eight hundred twenty-five million, two hundred thirty-four thousand, one hundred one".