625450842 has 64 divisors (see below), whose sum is σ = 1479081600. Its totient is φ = 195229440.

The previous prime is 625450817. The next prime is 625450853. The reversal of 625450842 is 248054526.

It is a happy number.

625450842 is a `hidden beast` number, since 62 + 54 + 508 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 625450797 and 625450806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192084 + ... + 195312.

It is an arithmetic number, because the mean of its divisors is an integer number (23110650).

Almost surely, 2^625450842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625450842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739540800).

625450842 is an abundant number, since it is smaller than the sum of its proper divisors (853630758).

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

625450842 is a wasteful number, since it uses less digits than its factorization.

625450842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468 (or 3462 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 625450842 is about 25009.0152145181. The cubic root of 625450842 is about 855.1935049866.

The spelling of 625450842 in words is "six hundred twenty-five million, four hundred fifty thousand, eight hundred forty-two".