125351447509 has 8 divisors (see below), whose sum is σ = 127228289408. Its totient is φ = 123474780000.

The previous prime is 125351447497. The next prime is 125351447513. The reversal of 125351447509 is 905744153521.

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

It is a cyclic number.

It is not a de Polignac number, because 125351447509 - 2⁵ = 125351447477 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 (125351447519) 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, 2546884 + ... + 2595634.

It is an arithmetic number, because the mean of its divisors is an integer number (15903536176).

Almost surely, 2^125351447509 is an apocalyptic number.

It is an amenable number.

125351447509 is a deficient number, since it is larger than the sum of its proper divisors (1876841899).

125351447509 is an equidigital number, since it uses as much as digits as its factorization.

125351447509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87195.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 125351447509 in words is "one hundred twenty-five billion, three hundred fifty-one million, four hundred forty-seven thousand, five hundred nine".