825557361 has 16 divisors (see below), whose sum is σ = 1106643648. Its totient is φ = 547430400.

The previous prime is 825557351. The next prime is 825557419. The reversal of 825557361 is 163755528.

It is not a de Polignac number, because 825557361 - 2⁵ = 825557329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (825557351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635865 + ... + 637161.

It is an arithmetic number, because the mean of its divisors is an integer number (69165228).

Almost surely, 2^825557361 is an apocalyptic number.

It is an amenable number.

825557361 is a deficient number, since it is larger than the sum of its proper divisors (281086287).

825557361 is a wasteful number, since it uses less digits than its factorization.

825557361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272.

The product of its digits is 252000, while the sum is 42.

The square root of 825557361 is about 28732.5140041730. The cubic root of 825557361 is about 938.0998892687.

The spelling of 825557361 in words is "eight hundred twenty-five million, five hundred fifty-seven thousand, three hundred sixty-one".