1625128930 has 32 divisors (see below), whose sum is σ = 2985984000. Its totient is φ = 636597312.

The previous prime is 1625128913. The next prime is 1625128933. The reversal of 1625128930 is 398215261.

1625128930 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1625128930.

It is not an unprimeable number, because it can be changed into a prime (1625128933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314911 + ... + 320029.

It is an arithmetic number, because the mean of its divisors is an integer number (93312000).

Almost surely, 2^1625128930 is an apocalyptic number.

1625128930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1625128930 is a deficient number, since it is larger than the sum of its proper divisors (1360855070).

1625128930 is a wasteful number, since it uses less digits than its factorization.

1625128930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5778.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1625128930 is about 40312.8878896067. The cubic root of 1625128930 is about 1175.6984361234.

The spelling of 1625128930 in words is "one billion, six hundred twenty-five million, one hundred twenty-eight thousand, nine hundred thirty".