1255125111 has 16 divisors (see below), whose sum is σ = 1747173120. Its totient is φ = 799951680.

The previous prime is 1255125107. The next prime is 1255125119. The reversal of 1255125111 is 1115215521.

It is not a de Polignac number, because 1255125111 - 2² = 1255125107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255125119) 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, 180051 + ... + 186891.

It is an arithmetic number, because the mean of its divisors is an integer number (109198320).

Almost surely, 2^1255125111 is an apocalyptic number.

1255125111 is a deficient number, since it is larger than the sum of its proper divisors (492048009).

1255125111 is a wasteful number, since it uses less digits than its factorization.

1255125111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9526.

The product of its digits is 500, while the sum is 24.

The square root of 1255125111 is about 35427.7449324678. The cubic root of 1255125111 is about 1078.6875664207.

The spelling of 1255125111 in words is "one billion, two hundred fifty-five million, one hundred twenty-five thousand, one hundred eleven".