1625252642 has 16 divisors (see below), whose sum is σ = 2626202040. Its totient is φ = 749889792.

The previous prime is 1625252627. The next prime is 1625252663. The reversal of 1625252642 is 2462525261.

It can be written as a sum of positive squares in 4 ways, for example, as 657358321 + 967894321 = 25639^2 + 31111^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103784 + ... + 118412.

Almost surely, 2^1625252642 is an apocalyptic number.

1625252642 is a deficient number, since it is larger than the sum of its proper divisors (1000949398).

1625252642 is a wasteful number, since it uses less digits than its factorization.

1625252642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18917.

The product of its digits is 57600, while the sum is 35.

The square root of 1625252642 is about 40314.4222580456. The cubic root of 1625252642 is about 1175.7282684876.

The spelling of 1625252642 in words is "one billion, six hundred twenty-five million, two hundred fifty-two thousand, six hundred forty-two".