1625387008 has 104 divisors (see below), whose sum is σ = 3764976768. Its totient is φ = 687194112.

The previous prime is 1625387003. The next prime is 1625387033. The reversal of 1625387008 is 8007835261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625387003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2379435 + ... + 2380117.

Almost surely, 2^1625387008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1625387008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1882488384).

1625387008 is an abundant number, since it is smaller than the sum of its proper divisors (2139589760).

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

1625387008 is an frugal number, since it uses more digits than its factorization.

1625387008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1625387008 is about 40316.0886991781. The cubic root of 1625387008 is about 1175.7606682813.

The spelling of 1625387008 in words is "one billion, six hundred twenty-five million, three hundred eighty-seven thousand, eight".