125213544155 has 8 divisors (see below), whose sum is σ = 171721432032. Its totient is φ = 85860715968.

The previous prime is 125213544139. The next prime is 125213544179. The reversal of 125213544155 is 551445312521.

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 125213544155 - 2⁴ = 125213544139 is a prime.

It is a super-2 number, since 2×125213544155² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1788764882 + ... + 1788764951.

It is an arithmetic number, because the mean of its divisors is an integer number (21465179004).

Almost surely, 2^125213544155 is an apocalyptic number.

125213544155 is a deficient number, since it is larger than the sum of its proper divisors (46507887877).

125213544155 is an equidigital number, since it uses as much as digits as its factorization.

125213544155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577529845.

The product of its digits is 120000, while the sum is 38.

Adding to 125213544155 its reverse (551445312521), we get a palindrome (676658856676).

The spelling of 125213544155 in words is "one hundred twenty-five billion, two hundred thirteen million, five hundred forty-four thousand, one hundred fifty-five".