3506319725 has 6 divisors (see below), whose sum is σ = 4347836490. Its totient is φ = 2805055760.

The previous prime is 3506319629. The next prime is 3506319727. The reversal of 3506319725 is 5279136053.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 876988996 + 2629330729 = 29614^2 + 51277^2 .

It is not a de Polignac number, because 3506319725 - 2¹⁰ = 3506318701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3506319727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70126370 + ... + 70126419.

It is an arithmetic number, because the mean of its divisors is an integer number (724639415).

Almost surely, 2^3506319725 is an apocalyptic number.

It is an amenable number.

3506319725 is a deficient number, since it is larger than the sum of its proper divisors (841516765).

3506319725 is a wasteful number, since it uses less digits than its factorization.

3506319725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140252799 (or 140252794 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 41.

The square root of 3506319725 is about 59214.1851670696. The cubic root of 3506319725 is about 1519.2077653911.

The spelling of 3506319725 in words is "three billion, five hundred six million, three hundred nineteen thousand, seven hundred twenty-five".