125891055 has 48 divisors (see below), whose sum is σ = 232957920. Its totient is φ = 62705664.

The previous prime is 125891047. The next prime is 125891063. The reversal of 125891055 is 550198521.

It is a happy number.

125891055 is a `hidden beast` number, since 12 + 589 + 10 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (125891047) and next prime (125891063).

It is not a de Polignac number, because 125891055 - 2³ = 125891047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61407 + ... + 63423.

It is an arithmetic number, because the mean of its divisors is an integer number (4853290).

Almost surely, 2^125891055 is an apocalyptic number.

125891055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125891055 is a deficient number, since it is larger than the sum of its proper divisors (107066865).

125891055 is a wasteful number, since it uses less digits than its factorization.

125891055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2117 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 36.

The square root of 125891055 is about 11220.1183148842. The cubic root of 125891055 is about 501.1852614239.

The spelling of 125891055 in words is "one hundred twenty-five million, eight hundred ninety-one thousand, fifty-five".