125621120140 has 48 divisors (see below), whose sum is σ = 266957540640. Its totient is φ = 49648642560.

The previous prime is 125621120137. The next prime is 125621120143. The reversal of 125621120140 is 41021126521.

It is an interprime number because it is at equal distance from previous prime (125621120137) and next prime (125621120143).

It is not an unprimeable number, because it can be changed into a prime (125621120143) 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, 2562055 + ... + 2610625.

It is an arithmetic number, because the mean of its divisors is an integer number (5561615430).

Almost surely, 2^125621120140 is an apocalyptic number.

125621120140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125621120140 is an abundant number, since it is smaller than the sum of its proper divisors (141336420500).

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

125621120140 is a wasteful number, since it uses less digits than its factorization.

125621120140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50122 (or 50120 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 125621120140 its reverse (41021126521), we get a palindrome (166642246661).

The spelling of 125621120140 in words is "one hundred twenty-five billion, six hundred twenty-one million, one hundred twenty thousand, one hundred forty".