125491232736 has 72 divisors (see below), whose sum is σ = 359433186840. Its totient is φ = 41529459456.

The previous prime is 125491232707. The next prime is 125491232747. The reversal of 125491232736 is 637232194521.

It is a happy number.

125491232736 is a `hidden beast` number, since 1 + 2 + 549 + 1 + 2 + 32 + 73 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 125491232691 and 125491232700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1527355 + ... + 1607418.

It is an arithmetic number, because the mean of its divisors is an integer number (4992127595).

Almost surely, 2^125491232736 is an apocalyptic number.

125491232736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125491232736 is an abundant number, since it is smaller than the sum of its proper divisors (233941954104).

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

125491232736 is a wasteful number, since it uses less digits than its factorization.

125491232736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134928 (or 3134917 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 125491232736 in words is "one hundred twenty-five billion, four hundred ninety-one million, two hundred thirty-two thousand, seven hundred thirty-six".