1045256605 has 16 divisors (see below), whose sum is σ = 1303488000. Its totient is φ = 803782080.

The previous prime is 1045256603. The next prime is 1045256621. The reversal of 1045256605 is 5066525401.

It is not a de Polignac number, because 1045256605 - 2¹ = 1045256603 is a prime.

It is a super-4 number, since 4×1045256605⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045256603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466 + ... + 45724.

It is an arithmetic number, because the mean of its divisors is an integer number (81468000).

Almost surely, 2^1045256605 is an apocalyptic number.

It is an amenable number.

1045256605 is a deficient number, since it is larger than the sum of its proper divisors (258231395).

1045256605 is a wasteful number, since it uses less digits than its factorization.

1045256605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45444.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1045256605 is about 32330.4284691682. The cubic root of 1045256605 is about 1014.8635163131.

The spelling of 1045256605 in words is "one billion, forty-five million, two hundred fifty-six thousand, six hundred five".