25709065511 has 16 divisors (see below), whose sum is σ = 27184604160. Its totient is φ = 24263759520.

The previous prime is 25709065493. The next prime is 25709065517. The reversal of 25709065511 is 11556090752.

It is a cyclic number.

It is not a de Polignac number, because 25709065511 - 2¹⁴ = 25709049127 is a prime.

It is a super-2 number, since 2×25709065511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25709065517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3377636 + ... + 3385238.

It is an arithmetic number, because the mean of its divisors is an integer number (1699037760).

Almost surely, 2^25709065511 is an apocalyptic number.

25709065511 is a deficient number, since it is larger than the sum of its proper divisors (1475538649).

25709065511 is a wasteful number, since it uses less digits than its factorization.

25709065511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9566.

The product of its (nonzero) digits is 94500, while the sum is 41.

The spelling of 25709065511 in words is "twenty-five billion, seven hundred nine million, sixty-five thousand, five hundred eleven".