3725665001 has 4 divisors (see below), whose sum is σ = 3728966100. Its totient is φ = 3722363904.

The previous prime is 3725664983. The next prime is 3725665057. The reversal of 3725665001 is 1005665273.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 763693225 + 2961971776 = 27635^2 + 54424^2 .

It is a cyclic number.

It is not a de Polignac number, because 3725665001 - 2²⁶ = 3658556137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3725665091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648856 + ... + 1651113.

It is an arithmetic number, because the mean of its divisors is an integer number (932241525).

Almost surely, 2^3725665001 is an apocalyptic number.

It is an amenable number.

3725665001 is a deficient number, since it is larger than the sum of its proper divisors (3301099).

3725665001 is a wasteful number, since it uses less digits than its factorization.

3725665001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301098.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 3725665001 is about 61038.2257360091. The cubic root of 3725665001 is about 1550.2483127672.

The spelling of 3725665001 in words is "three billion, seven hundred twenty-five million, six hundred sixty-five thousand, one".