125135001015 has 64 divisors (see below), whose sum is σ = 222135436800. Its totient is φ = 59893876224.

The previous prime is 125135001001. The next prime is 125135001023. The reversal of 125135001015 is 510100531521.

It is not a de Polignac number, because 125135001015 - 2⁶ = 125135000951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 295212 + ... + 580878.

It is an arithmetic number, because the mean of its divisors is an integer number (3470866200).

Almost surely, 2^125135001015 is an apocalyptic number.

125135001015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125135001015 is a deficient number, since it is larger than the sum of its proper divisors (97000435785).

125135001015 is a wasteful number, since it uses less digits than its factorization.

125135001015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285776.

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

Adding to 125135001015 its reverse (510100531521), we get a palindrome (635235532536).

The spelling of 125135001015 in words is "one hundred twenty-five billion, one hundred thirty-five million, one thousand, fifteen".