125215144 has 16 divisors (see below), whose sum is σ = 239774400. Its totient is φ = 61275312.

The previous prime is 125215121. The next prime is 125215147. The reversal of 125215144 is 441512521.

It is not an unprimeable number, because it can be changed into a prime (125215147) 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, 166134 + ... + 166885.

It is an arithmetic number, because the mean of its divisors is an integer number (14985900).

Almost surely, 2^125215144 is an apocalyptic number.

It is an amenable number.

125215144 is a deficient number, since it is larger than the sum of its proper divisors (114559256).

125215144 is a wasteful number, since it uses less digits than its factorization.

125215144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333072 (or 333068 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 125215144 is about 11189.9572832071. The cubic root of 125215144 is about 500.2866942481.

Adding to 125215144 its reverse (441512521), we get a palindrome (566727665).

The spelling of 125215144 in words is "one hundred twenty-five million, two hundred fifteen thousand, one hundred forty-four".