1158725555 has 16 divisors (see below), whose sum is σ = 1498258944. Its totient is φ = 855200640.

The previous prime is 1158725551. The next prime is 1158725563. The reversal of 1158725555 is 5555278511.

It is not a de Polignac number, because 1158725555 - 2² = 1158725551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1158725551) 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, 151022 + ... + 158508.

It is an arithmetic number, because the mean of its divisors is an integer number (93641184).

Almost surely, 2^1158725555 is an apocalyptic number.

1158725555 is a deficient number, since it is larger than the sum of its proper divisors (339533389).

1158725555 is a wasteful number, since it uses less digits than its factorization.

1158725555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9886.

The product of its digits is 350000, while the sum is 44.

The square root of 1158725555 is about 34040.0580933699. The cubic root of 1158725555 is about 1050.3326398845.

The spelling of 1158725555 in words is "one billion, one hundred fifty-eight million, seven hundred twenty-five thousand, five hundred fifty-five".