125511315 has 16 divisors (see below), whose sum is σ = 203648256. Its totient is φ = 65996000.

The previous prime is 125511311. The next prime is 125511361. The reversal of 125511315 is 513115521.

It is not a de Polignac number, because 125511315 - 2² = 125511311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125511311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57861 + ... + 59990.

It is an arithmetic number, because the mean of its divisors is an integer number (12728016).

Almost surely, 2^125511315 is an apocalyptic number.

125511315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125511315 is a deficient number, since it is larger than the sum of its proper divisors (78136941).

125511315 is a wasteful number, since it uses less digits than its factorization.

125511315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117930.

The product of its digits is 750, while the sum is 24.

The square root of 125511315 is about 11203.1832529866. The cubic root of 125511315 is about 500.6808258648.

Adding to 125511315 its reverse (513115521), we get a palindrome (638626836).

The spelling of 125511315 in words is "one hundred twenty-five million, five hundred eleven thousand, three hundred fifteen".