1258564845 has 16 divisors (see below), whose sum is σ = 2119688640. Its totient is φ = 635906304.

The previous prime is 1258564843. The next prime is 1258564889. The reversal of 1258564845 is 5484658521.

It is not a de Polignac number, because 1258564845 - 2¹ = 1258564843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1258564794 and 1258564803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258564843) 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, 2207724 + ... + 2208293.

It is an arithmetic number, because the mean of its divisors is an integer number (132480540).

Almost surely, 2^1258564845 is an apocalyptic number.

1258564845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1258564845 is a deficient number, since it is larger than the sum of its proper divisors (861123795).

1258564845 is a wasteful number, since it uses less digits than its factorization.

1258564845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416044.

The product of its digits is 1536000, while the sum is 48.

The square root of 1258564845 is about 35476.2574829984. The cubic root of 1258564845 is about 1079.6720669311.

The spelling of 1258564845 in words is "one billion, two hundred fifty-eight million, five hundred sixty-four thousand, eight hundred forty-five".