125520015 has 16 divisors (see below), whose sum is σ = 201005568. Its totient is φ = 66886176.

The previous prime is 125520013. The next prime is 125520041. The reversal of 125520015 is 510025521.

It is not a de Polignac number, because 125520015 - 2¹ = 125520013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125519973 and 125520000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125520013) 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, 18814 + ... + 24596.

It is an arithmetic number, because the mean of its divisors is an integer number (12562848).

Almost surely, 2^125520015 is an apocalyptic number.

125520015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125520015 is a deficient number, since it is larger than the sum of its proper divisors (75485553).

125520015 is a wasteful number, since it uses less digits than its factorization.

125520015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7238.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 125520015 is about 11203.5715287581. The cubic root of 125520015 is about 500.6923940716.

Adding to 125520015 its reverse (510025521), we get a palindrome (635545536).

The spelling of 125520015 in words is "one hundred twenty-five million, five hundred twenty thousand, fifteen".