1625455117 has 16 divisors (see below), whose sum is σ = 1911184128. Its totient is φ = 1362905280.

The previous prime is 1625455109. The next prime is 1625455159. The reversal of 1625455117 is 7115545261.

It is not a de Polignac number, because 1625455117 - 2³ = 1625455109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625450117) 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, 203868 + ... + 211690.

It is an arithmetic number, because the mean of its divisors is an integer number (119449008).

Almost surely, 2^1625455117 is an apocalyptic number.

It is an amenable number.

1625455117 is a deficient number, since it is larger than the sum of its proper divisors (285729011).

1625455117 is a wasteful number, since it uses less digits than its factorization.

1625455117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9300.

The product of its digits is 42000, while the sum is 37.

The square root of 1625455117 is about 40316.9333779245. The cubic root of 1625455117 is about 1175.7770907834. Note that the first 3 decimals are identical.

The spelling of 1625455117 in words is "one billion, six hundred twenty-five million, four hundred fifty-five thousand, one hundred seventeen".