1625003630 has 16 divisors (see below), whose sum is σ = 2927298960. Its totient is φ = 649492032.

The previous prime is 1625003621. The next prime is 1625003641. The reversal of 1625003630 is 363005261.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1625003630.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50144 + ... + 75923.

It is an arithmetic number, because the mean of its divisors is an integer number (182956185).

Almost surely, 2^1625003630 is an apocalyptic number.

1625003630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1625003630 is a deficient number, since it is larger than the sum of its proper divisors (1302295330).

1625003630 is a wasteful number, since it uses less digits than its factorization.

1625003630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127363.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 1625003630 is about 40311.3337660763. Note that the first 3 decimals coincide. The cubic root of 1625003630 is about 1175.6682192797.

Adding to 1625003630 its reverse (363005261), we get a palindrome (1988008891).

The spelling of 1625003630 in words is "one billion, six hundred twenty-five million, three thousand, six hundred thirty".