42725184749 has 4 divisors (see below), whose sum is σ = 46011737436. Its totient is φ = 39438632064.

The previous prime is 42725184743. The next prime is 42725184763. The reversal of 42725184749 is 94748152724.

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 23395843849 + 19329340900 = 152957^2 + 139030^2 .

It is not a de Polignac number, because 42725184749 - 2⁸ = 42725184493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42725184749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42725184743) 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, 1643276324 + ... + 1643276349.

It is an arithmetic number, because the mean of its divisors is an integer number (11502934359).

Almost surely, 2^42725184749 is an apocalyptic number.

It is an amenable number.

42725184749 is a deficient number, since it is larger than the sum of its proper divisors (3286552687).

42725184749 is a wasteful number, since it uses less digits than its factorization.

42725184749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286552686.

The product of its digits is 4515840, while the sum is 53.

It can be divided in two parts, 427251 and 84749, that added together give a cube (512000 = 80³).

The spelling of 42725184749 in words is "forty-two billion, seven hundred twenty-five million, one hundred eighty-four thousand, seven hundred forty-nine".