1625255250 has 128 divisors (see below), whose sum is σ = 4522003200. Its totient is φ = 386380800.

The previous prime is 1625255227. The next prime is 1625255251. The reversal of 1625255250 is 525525261.

It is not an unprimeable number, because it can be changed into a prime (1625255251) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 238896 + ... + 245604.

It is an arithmetic number, because the mean of its divisors is an integer number (35328150).

Almost surely, 2^1625255250 is an apocalyptic number.

1625255250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1625255250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2261001600).

1625255250 is an abundant number, since it is smaller than the sum of its proper divisors (2896747950).

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

1625255250 is a wasteful number, since it uses less digits than its factorization.

1625255250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765 (or 6755 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 1625255250 is about 40314.4546037770. The cubic root of 1625255250 is about 1175.7288973739.

The spelling of 1625255250 in words is "one billion, six hundred twenty-five million, two hundred fifty-five thousand, two hundred fifty".