125545 has 16 divisors (see below), whose sum is σ = 183168. Its totient is φ = 80640.

The previous prime is 125539. The next prime is 125551. The reversal of 125545 is 545521.

125545 = T₆ + T₇ + ... + T₉₀.

It is an interprime number because it is at equal distance from previous prime (125539) and next prime (125551).

It is not a de Polignac number, because 125545 - 2¹³ = 117353 is a prime.

It is an Ulam number.

It is a Duffinian number.

125545 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490 + ... + 700.

It is an arithmetic number, because the mean of its divisors is an integer number (11448).

2¹²⁵⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

125545 is a deficient number, since it is larger than the sum of its proper divisors (57623).

125545 is a wasteful number, since it uses less digits than its factorization.

125545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240.

The product of its digits is 1000, while the sum is 22.

The square root of 125545 is about 354.3232986977. The cubic root of 125545 is about 50.0725613128.

The spelling of 125545 in words is "one hundred twenty-five thousand, five hundred forty-five".