1025957691785 has 32 divisors (see below), whose sum is σ = 1344776525568. Its totient is φ = 746820829440.

The previous prime is 1025957691757. The next prime is 1025957691793. The reversal of 1025957691785 is 5871967595201.

It is not a de Polignac number, because 1025957691785 - 2¹⁰ = 1025957690761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29393954 + ... + 29428836.

It is an arithmetic number, because the mean of its divisors is an integer number (42024266424).

Almost surely, 2^{1025957691785} is an apocalyptic number.

It is an amenable number.

1025957691785 is a deficient number, since it is larger than the sum of its proper divisors (318818833783).

1025957691785 is a wasteful number, since it uses less digits than its factorization.

1025957691785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41345.

The product of its (nonzero) digits is 47628000, while the sum is 65.

The spelling of 1025957691785 in words is "one trillion, twenty-five billion, nine hundred fifty-seven million, six hundred ninety-one thousand, seven hundred eighty-five".