125641555 has 8 divisors (see below), whose sum is σ = 162367632. Its totient is φ = 92781408.

The previous prime is 125641553. The next prime is 125641573. The reversal of 125641555 is 555146521.

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 125641555 - 2¹ = 125641553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125641555.

It is not an unprimeable number, because it can be changed into a prime (125641553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966409 + ... + 966538.

It is an arithmetic number, because the mean of its divisors is an integer number (20295954).

Almost surely, 2^125641555 is an apocalyptic number.

125641555 is a deficient number, since it is larger than the sum of its proper divisors (36726077).

125641555 is a wasteful number, since it uses less digits than its factorization.

125641555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932965.

The product of its digits is 30000, while the sum is 34.

The square root of 125641555 is about 11208.9943795151. The cubic root of 125641555 is about 500.8539473841.

The spelling of 125641555 in words is "one hundred twenty-five million, six hundred forty-one thousand, five hundred fifty-five".