125625081 has 4 divisors (see below), whose sum is σ = 167500112. Its totient is φ = 83750052.

The previous prime is 125625079. The next prime is 125625091. The reversal of 125625081 is 180526521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 125625081 - 2¹ = 125625079 is a prime.

It is a super-2 number, since 2×125625081² = 31563321952513122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125625001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20937511 + ... + 20937516.

It is an arithmetic number, because the mean of its divisors is an integer number (41875028).

Almost surely, 2^125625081 is an apocalyptic number.

It is an amenable number.

125625081 is a deficient number, since it is larger than the sum of its proper divisors (41875031).

125625081 is an equidigital number, since it uses as much as digits as its factorization.

125625081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41875030.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 125625081 is about 11208.2594991372. The cubic root of 125625081 is about 500.8320559311.

The spelling of 125625081 in words is "one hundred twenty-five million, six hundred twenty-five thousand, eighty-one".