1025681611 has 16 divisors (see below), whose sum is σ = 1059177600. Its totient is φ = 992752128.

The previous prime is 1025681561. The next prime is 1025681639. The reversal of 1025681611 is 1161865201.

1025681611 = T₆₅₈₃ + T₆₅₈₄ + ... + T₆₆₂₉.

1025681611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1025681611 - 2⁹ = 1025681099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025681641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2507575 + ... + 2507983.

It is an arithmetic number, because the mean of its divisors is an integer number (66198600).

Almost surely, 2^1025681611 is an apocalyptic number.

1025681611 is a deficient number, since it is larger than the sum of its proper divisors (33495989).

1025681611 is a wasteful number, since it uses less digits than its factorization.

1025681611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1025681611 is about 32026.2643934631. The cubic root of 1025681611 is about 1008.4882822024.

The spelling of 1025681611 in words is "one billion, twenty-five million, six hundred eighty-one thousand, six hundred eleven".