825242530 has 32 divisors (see below), whose sum is σ = 1771455744. Its totient is φ = 270638016.

The previous prime is 825242521. The next prime is 825242533. The reversal of 825242530 is 35242528.

It is a junction number, because it is equal to n+sod(n) for n = 825242492 and 825242501.

It is not an unprimeable number, because it can be changed into a prime (825242533) 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, 254677 + ... + 257896.

It is an arithmetic number, because the mean of its divisors is an integer number (55357992).

Almost surely, 2^825242530 is an apocalyptic number.

825242530 is an abundant number, since it is smaller than the sum of its proper divisors (946213214).

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

825242530 is a wasteful number, since it uses less digits than its factorization.

825242530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512610.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 825242530 is about 28727.0348278412. The cubic root of 825242530 is about 937.9806241953.

The spelling of 825242530 in words is "eight hundred twenty-five million, two hundred forty-two thousand, five hundred thirty".