125105715 has 40 divisors (see below), whose sum is σ = 256307040. Its totient is φ = 57189888.

The previous prime is 125105711. The next prime is 125105723. The reversal of 125105715 is 517501521.

It is not a de Polignac number, because 125105715 - 2² = 125105711 is a prime.

It is a super-2 number, since 2×125105715² = 31302879851322450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (125105711) 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 39 ways as a sum of consecutive naturals, for example, 19230 + ... + 24899.

It is an arithmetic number, because the mean of its divisors is an integer number (6407676).

Almost surely, 2^125105715 is an apocalyptic number.

125105715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125105715 is an abundant number, since it is smaller than the sum of its proper divisors (131201325).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125105715 is an equidigital number, since it uses as much as digits as its factorization.

125105715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44153 (or 44144 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 125105715 is about 11185.0666068647. The cubic root of 125105715 is about 500.1409136163.

It can be divided in two parts, 12510 and 5715, that added together give a square (18225 = 135²).

The spelling of 125105715 in words is "one hundred twenty-five million, one hundred five thousand, seven hundred fifteen".