825961749 has 8 divisors (see below), whose sum is σ = 1159244640. Its totient is φ = 521660016.

The previous prime is 825961733. The next prime is 825961751. The reversal of 825961749 is 947169528.

825961749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 825961749 - 2⁴ = 825961733 is a prime.

It is a super-2 number, since 2×825961749² = 1364425621622278002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825961649) 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, 7245222 + ... + 7245335.

It is an arithmetic number, because the mean of its divisors is an integer number (144905580).

Almost surely, 2^825961749 is an apocalyptic number.

It is an amenable number.

825961749 is a deficient number, since it is larger than the sum of its proper divisors (333282891).

825961749 is a wasteful number, since it uses less digits than its factorization.

825961749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14490579.

The product of its digits is 1088640, while the sum is 51.

The square root of 825961749 is about 28739.5502574414. The cubic root of 825961749 is about 938.2530360727.

The spelling of 825961749 in words is "eight hundred twenty-five million, nine hundred sixty-one thousand, seven hundred forty-nine".