125115434120 has 16 divisors (see below), whose sum is σ = 281509726860. Its totient is φ = 50046173632.

The previous prime is 125115434117. The next prime is 125115434149. The reversal of 125115434120 is 21434511521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 124373307556 + 742126564 = 352666^2 + 27242^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1563942887 + ... + 1563942966.

Almost surely, 2^125115434120 is an apocalyptic number.

125115434120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125115434120 is an abundant number, since it is smaller than the sum of its proper divisors (156394292740).

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

125115434120 is a wasteful number, since it uses less digits than its factorization.

125115434120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127885864 (or 3127885860 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 125115434120 its reverse (21434511521), we get a palindrome (146549945641).

The spelling of 125115434120 in words is "one hundred twenty-five billion, one hundred fifteen million, four hundred thirty-four thousand, one hundred twenty".