125345442020 has 24 divisors (see below), whose sum is σ = 268191948024. Its totient is φ = 49192173056.

The previous prime is 125345441989. The next prime is 125345442037. The reversal of 125345442020 is 20244543521.

It can be written as a sum of positive squares in 4 ways, for example, as 2251122916 + 123094319104 = 47446^2 + 350848^2 .

It is a super-2 number, since 2×125345442020² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59124149 + ... + 59126268.

It is an arithmetic number, because the mean of its divisors is an integer number (11174664501).

Almost surely, 2^125345442020 is an apocalyptic number.

125345442020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125345442020 is an abundant number, since it is smaller than the sum of its proper divisors (142846506004).

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

125345442020 is a wasteful number, since it uses less digits than its factorization.

125345442020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118250479 (or 118250477 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 125345442020 its reverse (20244543521), we get a palindrome (145589985541).

The spelling of 125345442020 in words is "one hundred twenty-five billion, three hundred forty-five million, four hundred forty-two thousand, twenty".