1040255635 has 4 divisors (see below), whose sum is σ = 1248306768. Its totient is φ = 832204504.

The previous prime is 1040255633. The next prime is 1040255639. The reversal of 1040255635 is 5365520401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5365520401 = 131 ⋅40958171.

It is a cyclic number.

It is not a de Polignac number, because 1040255635 - 2¹ = 1040255633 is a prime.

It is a super-2 number, since 2×1040255635² = 2164263572298506450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040255597 and 1040255606.

It is not an unprimeable number, because it can be changed into a prime (1040255633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104025559 + ... + 104025568.

It is an arithmetic number, because the mean of its divisors is an integer number (312076692).

Almost surely, 2^1040255635 is an apocalyptic number.

1040255635 is a deficient number, since it is larger than the sum of its proper divisors (208051133).

1040255635 is an equidigital number, since it uses as much as digits as its factorization.

1040255635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208051132.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 1040255635 is about 32252.9942020892. The cubic root of 1040255635 is about 1013.2424095209.

The spelling of 1040255635 in words is "one billion, forty million, two hundred fifty-five thousand, six hundred thirty-five".