3725776645 has 16 divisors (see below), whose sum is σ = 4492181232. Its totient is φ = 2966492160.

The previous prime is 3725776619. The next prime is 3725776687. The reversal of 3725776645 is 5466775273.

3725776645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 463196484 + 3262580161 = 21522^2 + 57119^2 .

It is not a de Polignac number, because 3725776645 - 2⁷ = 3725776517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3725776592 and 3725776601.

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, 996199 + ... + 999931.

It is an arithmetic number, because the mean of its divisors is an integer number (280761327).

Almost surely, 2^3725776645 is an apocalyptic number.

It is an amenable number.

3725776645 is a deficient number, since it is larger than the sum of its proper divisors (766404587).

3725776645 is a wasteful number, since it uses less digits than its factorization.

3725776645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632.

The product of its digits is 7408800, while the sum is 52.

The square root of 3725776645 is about 61039.1402708131. The cubic root of 3725776645 is about 1550.2637976264.

The spelling of 3725776645 in words is "three billion, seven hundred twenty-five million, seven hundred seventy-six thousand, six hundred forty-five".