1258808085511 has 4 divisors (see below), whose sum is σ = 1260283828552. Its totient is φ = 1257332342472.

The previous prime is 1258808085499. The next prime is 1258808085539. The reversal of 1258808085511 is 1155808088521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1258808085511 - 2¹⁵ = 1258808052743 is a prime.

It is a super-2 number, since 2×1258808085511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258808085811) 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, 737870241 + ... + 737871946.

It is an arithmetic number, because the mean of its divisors is an integer number (315070957138).

Almost surely, 2^{1258808085511} is an apocalyptic number.

1258808085511 is a deficient number, since it is larger than the sum of its proper divisors (1475743041).

1258808085511 is an equidigital number, since it uses as much as digits as its factorization.

1258808085511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475743040.

The product of its (nonzero) digits is 1024000, while the sum is 52.

The spelling of 1258808085511 in words is "one trillion, two hundred fifty-eight billion, eight hundred eight million, eighty-five thousand, five hundred eleven".