125512140 has 96 divisors (see below), whose sum is σ = 388785600. Its totient is φ = 30053376.

The previous prime is 125512091. The next prime is 125512147. The reversal of 125512140 is 41215521.

It is not an unprimeable number, because it can be changed into a prime (125512147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26686 + ... + 31034.

It is an arithmetic number, because the mean of its divisors is an integer number (4049850).

Almost surely, 2^125512140 is an apocalyptic number.

125512140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125512140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194392800).

125512140 is an abundant number, since it is smaller than the sum of its proper divisors (263273460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125512140 is a wasteful number, since it uses less digits than its factorization.

125512140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411 (or 4409 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 125512140 is about 11203.2200728184. The cubic root of 125512140 is about 500.6819228729.

Adding to 125512140 its reverse (41215521), we get a palindrome (166727661).

The spelling of 125512140 in words is "one hundred twenty-five million, five hundred twelve thousand, one hundred forty".