125566745 has 4 divisors (see below), whose sum is σ = 150680100. Its totient is φ = 100453392.

The previous prime is 125566711. The next prime is 125566757. The reversal of 125566745 is 547665521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547665521 = 13 ⋅42128117.

It can be written as a sum of positive squares in 2 ways, for example, as 47844889 + 77721856 = 6917^2 + 8816^2 .

It is a cyclic number.

It is not a de Polignac number, because 125566745 - 2⁸ = 125566489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12556670 + ... + 12556679.

It is an arithmetic number, because the mean of its divisors is an integer number (37670025).

Almost surely, 2^125566745 is an apocalyptic number.

It is an amenable number.

125566745 is a deficient number, since it is larger than the sum of its proper divisors (25113355).

125566745 is an equidigital number, since it uses as much as digits as its factorization.

125566745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25113354.

The product of its digits is 252000, while the sum is 41.

The square root of 125566745 is about 11205.6568303692. The cubic root of 125566745 is about 500.7545208239.

The spelling of 125566745 in words is "one hundred twenty-five million, five hundred sixty-six thousand, seven hundred forty-five".