1625564334 has 16 divisors (see below), whose sum is σ = 3282694272. Its totient is φ = 536593848.

The previous prime is 1625564249. The next prime is 1625564357. The reversal of 1625564334 is 4334655261.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1625564292 and 1625564301.

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 7 ways as a sum of consecutive naturals, for example, 1314564 + ... + 1315799.

It is an arithmetic number, because the mean of its divisors is an integer number (205168392).

Almost surely, 2^1625564334 is an apocalyptic number.

1625564334 is an abundant number, since it is smaller than the sum of its proper divisors (1657129938).

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

1625564334 is a wasteful number, since it uses less digits than its factorization.

1625564334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630471.

The product of its digits is 259200, while the sum is 39.

The square root of 1625564334 is about 40318.2878356708. The cubic root of 1625564334 is about 1175.8034243252.

The spelling of 1625564334 in words is "one billion, six hundred twenty-five million, five hundred sixty-four thousand, three hundred thirty-four".