1625163120 has 240 divisors, whose sum is σ = 6289121280. Its totient is φ = 368395776.

The previous prime is 1625163109. The next prime is 1625163139. The reversal of 1625163120 is 213615261.

1625163120 is a `hidden beast` number, since 1 + 6 + 2 + 5 + 1 + 631 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 638811 + ... + 641349.

It is an arithmetic number, because the mean of its divisors is an integer number (26204672).

Almost surely, 2^1625163120 is an apocalyptic number.

1625163120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1625163120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3144560640).

1625163120 is an abundant number, since it is smaller than the sum of its proper divisors (4663958160).

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

1625163120 is a wasteful number, since it uses less digits than its factorization.

1625163120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692 (or 2683 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1625163120 is about 40313.3119453116. The cubic root of 1625163120 is about 1175.7066809764.

Adding to 1625163120 its reverse (213615261), we get a palindrome (1838778381).

The spelling of 1625163120 in words is "one billion, six hundred twenty-five million, one hundred sixty-three thousand, one hundred twenty".