1625002765 has 16 divisors (see below), whose sum is σ = 1965403440. Its totient is φ = 1289774080.

The previous prime is 1625002751. The next prime is 1625002777. The reversal of 1625002765 is 5672005261.

It can be written as a sum of positive squares in 8 ways, for example, as 298149289 + 1326853476 = 17267^2 + 36426^2 .

It is not a de Polignac number, because 1625002765 - 2¹⁷ = 1624871693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1625002765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381045 + ... + 385285.

It is an arithmetic number, because the mean of its divisors is an integer number (122837715).

Almost surely, 2^1625002765 is an apocalyptic number.

It is an amenable number.

1625002765 is a deficient number, since it is larger than the sum of its proper divisors (340400675).

1625002765 is a wasteful number, since it uses less digits than its factorization.

1625002765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1625002765 is about 40311.3230370823. The cubic root of 1625002765 is about 1175.6680106744.

The spelling of 1625002765 in words is "one billion, six hundred twenty-five million, two thousand, seven hundred sixty-five".