648545250 has 64 divisors (see below), whose sum is σ = 1662590592. Its totient is φ = 168264000.

The previous prime is 648545243. The next prime is 648545251. The reversal of 648545250 is 52545846.

It is a super-2 number, since 2×648545250² = 841221882595125000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 648545199 and 648545208.

It is not an unprimeable number, because it can be changed into a prime (648545251) 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, 16065 + ... + 39435.

It is an arithmetic number, because the mean of its divisors is an integer number (25977978).

Almost surely, 2^648545250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648545250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (831295296).

648545250 is an abundant number, since it is smaller than the sum of its proper divisors (1014045342).

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

648545250 is a wasteful number, since it uses less digits than its factorization.

648545250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23428 (or 23418 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

The square root of 648545250 is about 25466.5515922356. The cubic root of 648545250 is about 865.5923860477.

The spelling of 648545250 in words is "six hundred forty-eight million, five hundred forty-five thousand, two hundred fifty".