1625543250 has 64 divisors (see below), whose sum is σ = 4123986048. Its totient is φ = 426360000.

The previous prime is 1625543243. The next prime is 1625543261. The reversal of 1625543250 is 523455261.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27985 + ... + 63515.

It is an arithmetic number, because the mean of its divisors is an integer number (64437282).

Almost surely, 2^1625543250 is an apocalyptic number.

1625543250 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 1625543250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2061993024).

1625543250 is an abundant number, since it is smaller than the sum of its proper divisors (2498442798).

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

1625543250 is a wasteful number, since it uses less digits than its factorization.

1625543250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35612 (or 35602 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 1625543250 is about 40318.0263653865. The cubic root of 1625543250 is about 1175.7983408092.

The spelling of 1625543250 in words is "one billion, six hundred twenty-five million, five hundred forty-three thousand, two hundred fifty".