1625339540 has 48 divisors (see below), whose sum is σ = 3728954880. Its totient is φ = 590167680.

The previous prime is 1625339537. The next prime is 1625339549. The reversal of 1625339540 is 459335261.

It is a junction number, because it is equal to n+sod(n) for n = 1625339494 and 1625339503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625339549) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 156221 + ... + 166299.

It is an arithmetic number, because the mean of its divisors is an integer number (77686560).

Almost surely, 2^1625339540 is an apocalyptic number.

1625339540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 40315×40316.

It is an amenable number.

1625339540 is an abundant number, since it is smaller than the sum of its proper divisors (2103615340).

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

1625339540 is a wasteful number, since it uses less digits than its factorization.

1625339540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10832 (or 10830 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 1625339540 is about 40315.4999968995. The cubic root of 1625339540 is about 1175.7492224840.

The spelling of 1625339540 in words is "one billion, six hundred twenty-five million, three hundred thirty-nine thousand, five hundred forty".