125408731 has 8 divisors (see below), whose sum is σ = 148266720. Its totient is φ = 103786368.

The previous prime is 125408729. The next prime is 125408749. The reversal of 125408731 is 137804521.

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

It is not a de Polignac number, because 125408731 - 2¹ = 125408729 is a prime.

It is a super-2 number, since 2×125408731² = 31454699622060722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125408693 and 125408702.

It is not an unprimeable number, because it can be changed into a prime (125400731) 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, 308686 + ... + 309091.

It is an arithmetic number, because the mean of its divisors is an integer number (18533340).

Almost surely, 2^125408731 is an apocalyptic number.

125408731 is a deficient number, since it is larger than the sum of its proper divisors (22857989).

125408731 is an equidigital number, since it uses as much as digits as its factorization.

125408731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617813.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 125408731 is about 11198.6039754962. The cubic root of 125408731 is about 500.5443817486.

The spelling of 125408731 in words is "one hundred twenty-five million, four hundred eight thousand, seven hundred thirty-one".