125571516 has 36 divisors (see below), whose sum is σ = 340838568. Its totient is φ = 35877408.

The previous prime is 125571499. The next prime is 125571517. The reversal of 125571516 is 615175521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125571517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106191 + ... + 107366.

It is an arithmetic number, because the mean of its divisors is an integer number (9467738).

Almost surely, 2^125571516 is an apocalyptic number.

It is an amenable number.

125571516 is an abundant number, since it is smaller than the sum of its proper divisors (215267052).

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

125571516 is a wasteful number, since it uses less digits than its factorization.

125571516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213578 (or 213569 counting only the distinct ones).

The product of its digits is 10500, while the sum is 33.

The square root of 125571516 is about 11205.8697118965. The cubic root of 125571516 is about 500.7608629213.

It can be divided in two parts, 1255 and 71516, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 125571516 in words is "one hundred twenty-five million, five hundred seventy-one thousand, five hundred sixteen".