2605425645 has 16 divisors (see below), whose sum is σ = 4179191040. Its totient is φ = 1386057024.

The previous prime is 2605425643. The next prime is 2605425653. The reversal of 2605425645 is 5465245062.

It is not a de Polignac number, because 2605425645 - 2¹ = 2605425643 is a prime.

It is a super-3 number, since 3×2605425645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605425643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212805 + ... + 224714.

It is an arithmetic number, because the mean of its divisors is an integer number (261199440).

Almost surely, 2^2605425645 is an apocalyptic number.

It is an amenable number.

2605425645 is a deficient number, since it is larger than the sum of its proper divisors (1573765395).

2605425645 is a wasteful number, since it uses less digits than its factorization.

2605425645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437924.

The product of its (nonzero) digits is 288000, while the sum is 39.

The square root of 2605425645 is about 51043.3702355164. The cubic root of 2605425645 is about 1376.0246942468.

The spelling of 2605425645 in words is "two billion, six hundred five million, four hundred twenty-five thousand, six hundred forty-five".