125815125 has 16 divisors (see below), whose sum is σ = 209356992. Its totient is φ = 67101200.

The previous prime is 125815069. The next prime is 125815127. The reversal of 125815125 is 521518521.

It is not a de Polignac number, because 125815125 - 2⁹ = 125814613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125815092 and 125815101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125815127) 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, 167379 + ... + 168128.

It is an arithmetic number, because the mean of its divisors is an integer number (13084812).

Almost surely, 2^125815125 is an apocalyptic number.

125815125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125815125 is a deficient number, since it is larger than the sum of its proper divisors (83541867).

125815125 is an equidigital number, since it uses as much as digits as its factorization.

125815125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335525 (or 335515 counting only the distinct ones).

The product of its digits is 4000, while the sum is 30.

The square root of 125815125 is about 11216.7341503666. The cubic root of 125815125 is about 501.0844794414.

The spelling of 125815125 in words is "one hundred twenty-five million, eight hundred fifteen thousand, one hundred twenty-five".