1285345745 has 8 divisors (see below), whose sum is σ = 1542753216. Its totient is φ = 1028051056.

The previous prime is 1285345717. The next prime is 1285345793. The reversal of 1285345745 is 5475435821.

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

It is a cyclic number.

It is not a de Polignac number, because 1285345745 - 2⁶ = 1285345681 is a prime.

It is a super-2 number, since 2×1285345745² = 3304227368379210050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1285345696 and 1285345705.

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, 677 + ... + 50706.

It is an arithmetic number, because the mean of its divisors is an integer number (192844152).

Almost surely, 2^1285345745 is an apocalyptic number.

It is an amenable number.

1285345745 is a deficient number, since it is larger than the sum of its proper divisors (257407471).

1285345745 is an equidigital number, since it uses as much as digits as its factorization.

1285345745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56391.

The product of its digits is 672000, while the sum is 44.

The square root of 1285345745 is about 35851.7188569809. The cubic root of 1285345745 is about 1087.2764664974.

The spelling of 1285345745 in words is "one billion, two hundred eighty-five million, three hundred forty-five thousand, seven hundred forty-five".