125499156647 has 8 divisors (see below), whose sum is σ = 127537964400. Its totient is φ = 123465222144.

The previous prime is 125499156637. The next prime is 125499156659. The reversal of 125499156647 is 746651994521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125499156647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125499156637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1166372 + ... + 1269417.

It is an arithmetic number, because the mean of its divisors is an integer number (15942245550).

Almost surely, 2^125499156647 is an apocalyptic number.

125499156647 is a deficient number, since it is larger than the sum of its proper divisors (2038807753).

125499156647 is an equidigital number, since it uses as much as digits as its factorization.

125499156647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436625.

The product of its digits is 16329600, while the sum is 59.

The spelling of 125499156647 in words is "one hundred twenty-five billion, four hundred ninety-nine million, one hundred fifty-six thousand, six hundred forty-seven".