1265428750965 has 8 divisors (see below), whose sum is σ = 2024686001568. Its totient is φ = 674895333840.

The previous prime is 1265428750939. The next prime is 1265428751077. The reversal of 1265428750965 is 5690578245621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1265428750965 - 2¹⁷ = 1265428619893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1265428750899 and 1265428750908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42180958351 + ... + 42180958380.

It is an arithmetic number, because the mean of its divisors is an integer number (253085750196).

Almost surely, 2^{1265428750965} is an apocalyptic number.

1265428750965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1265428750965 is a deficient number, since it is larger than the sum of its proper divisors (759257250603).

1265428750965 is an equidigital number, since it uses as much as digits as its factorization.

1265428750965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84361916739.

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 1265428750965 in words is "one trillion, two hundred sixty-five billion, four hundred twenty-eight million, seven hundred fifty thousand, nine hundred sixty-five".