125378111 has 4 divisors (see below), whose sum is σ = 132753312. Its totient is φ = 118002912.

The previous prime is 125378101. The next prime is 125378161. The reversal of 125378111 is 111873521.

125378111 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111873521 = 149 ⋅750829.

It is a cyclic number.

It is not a de Polignac number, because 125378111 - 2¹⁸ = 125115967 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 (125378101) 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, 3687575 + ... + 3687608.

It is an arithmetic number, because the mean of its divisors is an integer number (33188328).

Almost surely, 2^125378111 is an apocalyptic number.

125378111 is a deficient number, since it is larger than the sum of its proper divisors (7375201).

125378111 is an equidigital number, since it uses as much as digits as its factorization.

125378111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7375200.

The product of its digits is 1680, while the sum is 29.

The square root of 125378111 is about 11197.2367573433. The cubic root of 125378111 is about 500.5036405221.

The spelling of 125378111 in words is "one hundred twenty-five million, three hundred seventy-eight thousand, one hundred eleven".