3143725 has 24 divisors (see below), whose sum is σ = 4452840. Its totient is φ = 2181120.

The previous prime is 3143719. The next prime is 3143729. The reversal of 3143725 is 5273413.

It can be written as a sum of positive squares in 12 ways, for example, as 1510441 + 1633284 = 1229^2 + 1278^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3143725 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 3143725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3143729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5241 + ... + 5809.

It is an arithmetic number, because the mean of its divisors is an integer number (185535).

Almost surely, 2^3143725 is an apocalyptic number.

It is an amenable number.

3143725 is a deficient number, since it is larger than the sum of its proper divisors (1309115).

3143725 is a wasteful number, since it uses less digits than its factorization.

3143725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 604 counting only the distinct ones).

The product of its digits is 2520, while the sum is 25.

The square root of 3143725 is about 1773.0552726861. The cubic root of 3143725 is about 146.4923175042.

The spelling of 3143725 in words is "three million, one hundred forty-three thousand, seven hundred twenty-five".