1625266642 has 16 divisors (see below), whose sum is σ = 2447444160. Its totient is φ = 809458672.

The previous prime is 1625266607. The next prime is 1625266651. The reversal of 1625266642 is 2466625261.

It is a junction number, because it is equal to n+sod(n) for n = 1625266595 and 1625266604.

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, 822768 + ... + 824740.

It is an arithmetic number, because the mean of its divisors is an integer number (152965260).

Almost surely, 2^1625266642 is an apocalyptic number.

1625266642 is a deficient number, since it is larger than the sum of its proper divisors (822177518).

1625266642 is a wasteful number, since it uses less digits than its factorization.

1625266642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377.

The product of its digits is 207360, while the sum is 40.

The square root of 1625266642 is about 40314.5958928029. The cubic root of 1625266642 is about 1175.7316444034.

The spelling of 1625266642 in words is "one billion, six hundred twenty-five million, two hundred sixty-six thousand, six hundred forty-two".