125825521 has 8 divisors (see below), whose sum is σ = 127300160. Its totient is φ = 124355952.

The previous prime is 125825507. The next prime is 125825527. The reversal of 125825521 is 125528521.

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 125825521 - 2⁵ = 125825489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125825527) 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, 72166 + ... + 73888.

It is an arithmetic number, because the mean of its divisors is an integer number (15912520).

Almost surely, 2^125825521 is an apocalyptic number.

It is an amenable number.

125825521 is a deficient number, since it is larger than the sum of its proper divisors (1474639).

125825521 is a wasteful number, since it uses less digits than its factorization.

125825521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535.

The product of its digits is 8000, while the sum is 31.

The square root of 125825521 is about 11217.1975555394. The cubic root of 125825521 is about 501.0982804604.

The spelling of 125825521 in words is "one hundred twenty-five million, eight hundred twenty-five thousand, five hundred twenty-one".