125735731 has 8 divisors (see below), whose sum is σ = 140873904. Its totient is φ = 111215520.

The previous prime is 125735717. The next prime is 125735747. The reversal of 125735731 is 137537521.

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 125735731 - 2⁵ = 125735699 is a prime.

It is a super-2 number, since 2×125735731² = 31618948100208722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125735231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154060 + ... + 154873.

It is an arithmetic number, because the mean of its divisors is an integer number (17609238).

Almost surely, 2^125735731 is an apocalyptic number.

125735731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125735731 is a deficient number, since it is larger than the sum of its proper divisors (15138173).

125735731 is a wasteful number, since it uses less digits than its factorization.

125735731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308981.

The product of its digits is 22050, while the sum is 34.

The square root of 125735731 is about 11213.1945046896. The cubic root of 125735731 is about 500.9790563128.

The spelling of 125735731 in words is "one hundred twenty-five million, seven hundred thirty-five thousand, seven hundred thirty-one".