2749725 has 54 divisors (see below), whose sum is σ = 5467098. Its totient is φ = 1320000.

The previous prime is 2749723. The next prime is 2749763. The reversal of 2749725 is 5279472.

It can be written as a sum of positive squares in 3 ways, for example, as 736164 + 2013561 = 858^2 + 1419^2 .

It is not a de Polignac number, because 2749725 - 2¹ = 2749723 is a prime.

Its product of digits (35280) is a multiple of the sum of its prime divisors (120).

It is a self number, because there is not a number n which added to its sum of digits gives 2749725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 27175 + ... + 27275.

2^2749725 is an apocalyptic number.

2749725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2749725 is a deficient number, since it is larger than the sum of its proper divisors (2717373).

2749725 is a wasteful number, since it uses less digits than its factorization.

2749725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 120 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 2749725 is about 1658.2294774849. The cubic root of 2749725 is about 140.0972963115.

It can be divided in two parts, 274 and 9725, that added together give a palindrome (9999).

The spelling of 2749725 in words is "two million, seven hundred forty-nine thousand, seven hundred twenty-five".