825194136 has 32 divisors (see below), whose sum is σ = 2221677360. Its totient is φ = 253905792.

The previous prime is 825194131. The next prime is 825194147. The reversal of 825194136 is 631491528.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 825194094 and 825194103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825194131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1322115 + ... + 1322738.

Almost surely, 2^825194136 is an apocalyptic number.

It is an amenable number.

825194136 is an abundant number, since it is smaller than the sum of its proper divisors (1396483224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

825194136 is a wasteful number, since it uses less digits than its factorization.

825194136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644875 (or 2644871 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 825194136 is about 28726.1925078838. The cubic root of 825194136 is about 937.9622887687.

The spelling of 825194136 in words is "eight hundred twenty-five million, one hundred ninety-four thousand, one hundred thirty-six".