2600249025721 has 4 divisors (see below), whose sum is σ = 2611703867472. Its totient is φ = 2588794183972.

The previous prime is 2600249025719. The next prime is 2600249025743. The reversal of 2600249025721 is 1275209420062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2600249025721 - 2¹ = 2600249025719 is a prime.

It is a super-2 number, since 2×2600249025721² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2600249025791) 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, 5727420535 + ... + 5727420988.

It is an arithmetic number, because the mean of its divisors is an integer number (652925966868).

Almost surely, 2^{2600249025721} is an apocalyptic number.

It is an amenable number.

2600249025721 is a deficient number, since it is larger than the sum of its proper divisors (11454841751).

2600249025721 is a wasteful number, since it uses less digits than its factorization.

2600249025721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11454841750.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 2600249025721 in words is "two trillion, six hundred billion, two hundred forty-nine million, twenty-five thousand, seven hundred twenty-one".