125145111 has 16 divisors (see below), whose sum is σ = 205366784. Its totient is φ = 66010464.

The previous prime is 125145091. The next prime is 125145113. The reversal of 125145111 is 111541521.

It is not a de Polignac number, because 125145111 - 2⁷ = 125144983 is a prime.

It is a super-2 number, since 2×125145111² = 31322597614404642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125145113) 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, 228931 + ... + 229476.

It is an arithmetic number, because the mean of its divisors is an integer number (12835424).

Almost surely, 2^125145111 is an apocalyptic number.

125145111 is a deficient number, since it is larger than the sum of its proper divisors (80221673).

125145111 is a wasteful number, since it uses less digits than its factorization.

125145111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458430.

The product of its digits is 200, while the sum is 21.

The square root of 125145111 is about 11186.8275663836. The cubic root of 125145111 is about 500.1934065115.

Adding to 125145111 its reverse (111541521), we get a palindrome (236686632).

The spelling of 125145111 in words is "one hundred twenty-five million, one hundred forty-five thousand, one hundred eleven".