2740725021 has 8 divisors (see below), whose sum is σ = 3664832544. Its totient is φ = 1821883760.

The previous prime is 2740725019. The next prime is 2740725041. The reversal of 2740725021 is 1205270472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2740725021 - 2¹ = 2740725019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2740725021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740725041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315350 + ... + 1317431.

It is an arithmetic number, because the mean of its divisors is an integer number (458104068).

Almost surely, 2^2740725021 is an apocalyptic number.

It is an amenable number.

2740725021 is a deficient number, since it is larger than the sum of its proper divisors (924107523).

2740725021 is a wasteful number, since it uses less digits than its factorization.

2740725021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633131.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 2740725021 is about 52351.9342622601. The cubic root of 2740725021 is about 1399.4428090533.

Adding to 2740725021 its reverse (1205270472), we get a palindrome (3945995493).

The spelling of 2740725021 in words is "two billion, seven hundred forty million, seven hundred twenty-five thousand, twenty-one".