825061578 has 64 divisors (see below), whose sum is σ = 1910563200. Its totient is φ = 234752000.

The previous prime is 825061577. The next prime is 825061591. The reversal of 825061578 is 875160528.

It is a super-3 number, since 3×825061578³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (825061577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 785998 + ... + 787046.

It is an arithmetic number, because the mean of its divisors is an integer number (29852550).

Almost surely, 2^825061578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 825061578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955281600).

825061578 is an abundant number, since it is smaller than the sum of its proper divisors (1085501622).

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

825061578 is a wasteful number, since it uses less digits than its factorization.

825061578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783.

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 825061578 is about 28723.8851480784. The cubic root of 825061578 is about 937.9120617745.

The spelling of 825061578 in words is "eight hundred twenty-five million, sixty-one thousand, five hundred seventy-eight".