1625236500 has 96 divisors (see below), whose sum is σ = 4833593856. Its totient is φ = 424156800.

The previous prime is 1625236469. The next prime is 1625236519. The reversal of 1625236500 is 56325261.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 58974 + ... + 82026.

It is an arithmetic number, because the mean of its divisors is an integer number (50349936).

Almost surely, 2^1625236500 is an apocalyptic number.

1625236500 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 1625236500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2416796928).

1625236500 is an abundant number, since it is smaller than the sum of its proper divisors (3208357356).

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

1625236500 is a wasteful number, since it uses less digits than its factorization.

1625236500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23122 (or 23110 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1625236500 is about 40314.2220562421. Note that the first 3 decimals coincide. The cubic root of 1625236500 is about 1175.7243760325.

The spelling of 1625236500 in words is "one billion, six hundred twenty-five million, two hundred thirty-six thousand, five hundred".