1625040630 has 48 divisors (see below), whose sum is σ = 4381597584. Its totient is φ = 433343520.

The previous prime is 1625040583. The next prime is 1625040631. The reversal of 1625040630 is 360405261.

1625040630 is a `hidden beast` number, since 1 + 6 + 25 + 0 + 4 + 0 + 630 = 666.

1625040630 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1625040594 and 1625040603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625040631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 331941 + ... + 336800.

It is an arithmetic number, because the mean of its divisors is an integer number (91283283).

Almost surely, 2^1625040630 is an apocalyptic number.

1625040630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1625040630 is an abundant number, since it is smaller than the sum of its proper divisors (2756556954).

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

1625040630 is an equidigital number, since it uses as much as digits as its factorization.

1625040630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668763 (or 668751 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1625040630 is about 40311.7926914693. The cubic root of 1625040630 is about 1175.6771422124.

Adding to 1625040630 its reverse (360405261), we get a palindrome (1985445891).

The spelling of 1625040630 in words is "one billion, six hundred twenty-five million, forty thousand, six hundred thirty".