1949425625 has 20 divisors (see below), whose sum is σ = 2784008832. Its totient is φ = 1336746000.

The previous prime is 1949425619. The next prime is 1949425633. The reversal of 1949425625 is 5265249491.

It is not a de Polignac number, because 1949425625 - 2⁶ = 1949425561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1949425625.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 218417 + ... + 227166.

Almost surely, 2^1949425625 is an apocalyptic number.

It is an amenable number.

1949425625 is a deficient number, since it is larger than the sum of its proper divisors (834583207).

1949425625 is an frugal number, since it uses more digits than its factorization.

1949425625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445610 (or 445595 counting only the distinct ones).

The product of its digits is 777600, while the sum is 47.

The square root of 1949425625 is about 44152.3003364491. The cubic root of 1949425625 is about 1249.2103012057.

The spelling of 1949425625 in words is "one billion, nine hundred forty-nine million, four hundred twenty-five thousand, six hundred twenty-five".