125653405 has 8 divisors (see below), whose sum is σ = 151432632. Its totient is φ = 100090368.

The previous prime is 125653391. The next prime is 125653427. The reversal of 125653405 is 504356521.

It can be written as a sum of positive squares in 4 ways, for example, as 459684 + 125193721 = 678^2 + 11189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125653405 - 2⁵ = 125653373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52764 + ... + 55093.

It is an arithmetic number, because the mean of its divisors is an integer number (18929079).

Almost surely, 2^125653405 is an apocalyptic number.

It is an amenable number.

125653405 is a deficient number, since it is larger than the sum of its proper divisors (25779227).

125653405 is a wasteful number, since it uses less digits than its factorization.

125653405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108095.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 125653405 is about 11209.5229604118. The cubic root of 125653405 is about 500.8696930576.

The spelling of 125653405 in words is "one hundred twenty-five million, six hundred fifty-three thousand, four hundred five".