125388649 has 8 divisors (see below), whose sum is σ = 126312992. Its totient is φ = 124467840.

The previous prime is 125388647. The next prime is 125388667. The reversal of 125388649 is 946883521.

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 125388649 - 2¹ = 125388647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125388599 and 125388608.

It is not an unprimeable number, because it can be changed into a prime (125388647) 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, 141562 + ... + 142444.

It is an arithmetic number, because the mean of its divisors is an integer number (15789124).

Almost surely, 2^125388649 is an apocalyptic number.

It is an amenable number.

125388649 is a deficient number, since it is larger than the sum of its proper divisors (924343).

125388649 is an equidigital number, since it uses as much as digits as its factorization.

125388649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767.

The product of its digits is 414720, while the sum is 46.

The square root of 125388649 is about 11197.7073099809. The cubic root of 125388649 is about 500.5176625327.

The spelling of 125388649 in words is "one hundred twenty-five million, three hundred eighty-eight thousand, six hundred forty-nine".