125501140 has 36 divisors (see below), whose sum is σ = 279980316. Its totient is φ = 47245312.

The previous prime is 125501119. The next prime is 125501147. The reversal of 125501140 is 41105521.

It can be written as a sum of positive squares in 6 ways, for example, as 1223236 + 124277904 = 1106^2 + 11148^2 .

It is a super-2 number, since 2×125501140² = 31501072282599200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125501147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5077 + ... + 16636.

It is an arithmetic number, because the mean of its divisors is an integer number (7777231).

Almost surely, 2^125501140 is an apocalyptic number.

125501140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125501140 is an abundant number, since it is smaller than the sum of its proper divisors (154479176).

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

125501140 is a wasteful number, since it uses less digits than its factorization.

125501140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21756 (or 21737 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 125501140 is about 11202.7291317786. The cubic root of 125501140 is about 500.6672957034.

Adding to 125501140 its reverse (41105521), we get a palindrome (166606661).

The spelling of 125501140 in words is "one hundred twenty-five million, five hundred one thousand, one hundred forty".