125550871 has 4 divisors (see below), whose sum is σ = 127609144. Its totient is φ = 123492600.

The previous prime is 125550833. The next prime is 125550877. The reversal of 125550871 is 178055521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178055521 = 7 ⋅25436503.

It is a cyclic number.

It is not a de Polignac number, because 125550871 - 2⁷ = 125550743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125550877) 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, 1029045 + ... + 1029166.

It is an arithmetic number, because the mean of its divisors is an integer number (31902286).

Almost surely, 2^125550871 is an apocalyptic number.

125550871 is a deficient number, since it is larger than the sum of its proper divisors (2058273).

125550871 is an equidigital number, since it uses as much as digits as its factorization.

125550871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058272.

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 125550871 is about 11204.9485050133. The cubic root of 125550871 is about 500.7334183357.

The spelling of 125550871 in words is "one hundred twenty-five million, five hundred fifty thousand, eight hundred seventy-one".