1625387253889 has 16 divisors (see below), whose sum is σ = 1925328597120. Its totient is φ = 1342566126720.

The previous prime is 1625387253877. The next prime is 1625387253901. The reversal of 1625387253889 is 9883527835261.

It is an interprime number because it is at equal distance from previous prime (1625387253877) and next prime (1625387253901).

It is not a de Polignac number, because 1625387253889 - 2⁹ = 1625387253377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1625387253829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7578339 + ... + 7789864.

It is an arithmetic number, because the mean of its divisors is an integer number (120333037320).

Almost surely, 2^{1625387253889} is an apocalyptic number.

It is an amenable number.

1625387253889 is a deficient number, since it is larger than the sum of its proper divisors (299941343231).

1625387253889 is a wasteful number, since it uses less digits than its factorization.

1625387253889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15368760.

The product of its digits is 174182400, while the sum is 67.

The spelling of 1625387253889 in words is "one trillion, six hundred twenty-five billion, three hundred eighty-seven million, two hundred fifty-three thousand, eight hundred eighty-nine".