125712155 has 8 divisors (see below), whose sum is σ = 153327984. Its totient is φ = 98920800.

The previous prime is 125712101. The next prime is 125712157. The reversal of 125712155 is 551217521.

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

It is not a de Polignac number, because 125712155 - 2¹⁸ = 125450011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125712157) 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, 205781 + ... + 206390.

It is an arithmetic number, because the mean of its divisors is an integer number (19165998).

Almost surely, 2^125712155 is an apocalyptic number.

125712155 is a deficient number, since it is larger than the sum of its proper divisors (27615829).

125712155 is an equidigital number, since it uses as much as digits as its factorization.

125712155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412237.

The product of its digits is 3500, while the sum is 29.

The square root of 125712155 is about 11212.1431938769. The cubic root of 125712155 is about 500.9477424335.

Adding to 125712155 its reverse (551217521), we get a palindrome (676929676).

The spelling of 125712155 in words is "one hundred twenty-five million, seven hundred twelve thousand, one hundred fifty-five".