125471709 has 24 divisors (see below), whose sum is σ = 198237312. Its totient is φ = 75841920.

The previous prime is 125471707. The next prime is 125471741. The reversal of 125471709 is 907174521.

It is a happy number.

It is not a de Polignac number, because 125471709 - 2¹ = 125471707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125471707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41404 + ... + 44330.

It is an arithmetic number, because the mean of its divisors is an integer number (8259888).

Almost surely, 2^125471709 is an apocalyptic number.

It is an amenable number.

125471709 is a deficient number, since it is larger than the sum of its proper divisors (72765603).

125471709 is a wasteful number, since it uses less digits than its factorization.

125471709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377 (or 3374 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 125471709 is about 11201.4154909101. The cubic root of 125471709 is about 500.6281558433.

The spelling of 125471709 in words is "one hundred twenty-five million, four hundred seventy-one thousand, seven hundred nine".