1625573673 has 12 divisors (see below), whose sum is σ = 2349837568. Its totient is φ = 1082891160.

The previous prime is 1625573647. The next prime is 1625573681. The reversal of 1625573673 is 3763755261.

1625573673 is a `hidden beast` number, since 1 + 6 + 2 + 5 + 573 + 6 + 73 = 666.

It is not a de Polignac number, because 1625573673 - 2⁵ = 1625573641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625573603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56113 + ... + 79998.

Almost surely, 2^1625573673 is an apocalyptic number.

It is an amenable number.

1625573673 is a deficient number, since it is larger than the sum of its proper divisors (724263895).

1625573673 is a wasteful number, since it uses less digits than its factorization.

1625573673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137444 (or 137441 counting only the distinct ones).

The product of its digits is 793800, while the sum is 45.

The square root of 1625573673 is about 40318.4036514344. The cubic root of 1625573673 is about 1175.8056760165.

The spelling of 1625573673 in words is "one billion, six hundred twenty-five million, five hundred seventy-three thousand, six hundred seventy-three".