25772721061511 has 4 divisors (see below), whose sum is σ = 27288763476912. Its totient is φ = 24256678646112.

The previous prime is 25772721061463. The next prime is 25772721061531. The reversal of 25772721061511 is 11516012727752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25772721061511 - 2⁶ = 25772721061447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25772721061531) 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, 758021207675 + ... + 758021207708.

It is an arithmetic number, because the mean of its divisors is an integer number (6822190869228).

Almost surely, 2^{25772721061511} is an apocalyptic number.

25772721061511 is a deficient number, since it is larger than the sum of its proper divisors (1516042415401).

25772721061511 is a wasteful number, since it uses less digits than its factorization.

25772721061511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516042415400.

The product of its (nonzero) digits is 411600, while the sum is 47.

The spelling of 25772721061511 in words is "twenty-five trillion, seven hundred seventy-two billion, seven hundred twenty-one million, sixty-one thousand, five hundred eleven".