1625402163 has 16 divisors (see below), whose sum is σ = 2701967616. Its totient is φ = 844364640.

The previous prime is 1625402153. The next prime is 1625402167. The reversal of 1625402163 is 3612045261.

It is not a de Polignac number, because 1625402163 - 2⁸ = 1625401907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1625402163.

It is not an unprimeable number, because it can be changed into a prime (1625402167) 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, 3517956 + ... + 3518417.

It is an arithmetic number, because the mean of its divisors is an integer number (168872976).

Almost surely, 2^1625402163 is an apocalyptic number.

1625402163 is a deficient number, since it is larger than the sum of its proper divisors (1076565453).

1625402163 is a wasteful number, since it uses less digits than its factorization.

1625402163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7036394.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1625402163 is about 40316.2766510004. The cubic root of 1625402163 is about 1175.7643225080.

The spelling of 1625402163 in words is "one billion, six hundred twenty-five million, four hundred two thousand, one hundred sixty-three".