1071239680725 has 24 divisors (see below), whose sum is σ = 1771310488992. Its totient is φ = 571265179200.

The previous prime is 1071239680673. The next prime is 1071239680787. The reversal of 1071239680725 is 5270869321701.

It is not a de Polignac number, because 1071239680725 - 2¹⁰ = 1071239679701 is a prime.

It is a super-2 number, since 2×1071239680725² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90571 + ... + 1466520.

It is an arithmetic number, because the mean of its divisors is an integer number (73804603708).

Almost surely, 2^{1071239680725} is an apocalyptic number.

1071239680725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1071239680725 is a deficient number, since it is larger than the sum of its proper divisors (700070808267).

1071239680725 is a wasteful number, since it uses less digits than its factorization.

1071239680725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566277 (or 1566272 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 1071239680725 in words is "one trillion, seventy-one billion, two hundred thirty-nine million, six hundred eighty thousand, seven hundred twenty-five".