1558872225 has 36 divisors (see below), whose sum is σ = 2795938236. Its totient is φ = 830259840.

The previous prime is 1558872223. The next prime is 1558872241. The reversal of 1558872225 is 5222788551.

1558872225 is a `hidden beast` number, since 1 + 558 + 8 + 72 + 2 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 268697664 + 1290174561 = 16392^2 + 35919^2 .

It is not a de Polignac number, because 1558872225 - 2¹ = 1558872223 is a prime.

It is a super-2 number, since 2×1558872225² = 4860165227752901250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1558872223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 174979 + ... + 183671.

It is an arithmetic number, because the mean of its divisors is an integer number (77664951).

Almost surely, 2^1558872225 is an apocalyptic number.

1558872225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1558872225 is a deficient number, since it is larger than the sum of its proper divisors (1237066011).

1558872225 is a wasteful number, since it uses less digits than its factorization.

1558872225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9506 (or 9498 counting only the distinct ones).

The product of its digits is 448000, while the sum is 45.

The square root of 1558872225 is about 39482.5559582963. Note that the first 3 decimals coincide. The cubic root of 1558872225 is about 1159.4984516770.

The spelling of 1558872225 in words is "one billion, five hundred fifty-eight million, eight hundred seventy-two thousand, two hundred twenty-five".