125616521111 has 8 divisors (see below), whose sum is σ = 126339896064. Its totient is φ = 124893830880.

The previous prime is 125616521101. The next prime is 125616521113. The reversal of 125616521111 is 111125616521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125616521111 - 2³⁴ = 108436651927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125616521113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199085 + ... + 539321.

It is an arithmetic number, because the mean of its divisors is an integer number (15792487008).

Almost surely, 2^125616521111 is an apocalyptic number.

125616521111 is a deficient number, since it is larger than the sum of its proper divisors (723374953).

125616521111 is a wasteful number, since it uses less digits than its factorization.

125616521111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342361.

The product of its digits is 3600, while the sum is 32.

The spelling of 125616521111 in words is "one hundred twenty-five billion, six hundred sixteen million, five hundred twenty-one thousand, one hundred eleven".