125623015 has 12 divisors (see below), whose sum is σ = 175359816. Its totient is φ = 86141328.

The previous prime is 125623007. The next prime is 125623027. The reversal of 125623015 is 510326521.

It is not a de Polignac number, because 125623015 - 2³ = 125623007 is a prime.

It is a super-2 number, since 2×125623015² = 31562283795380450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256129 + ... + 256618.

It is an arithmetic number, because the mean of its divisors is an integer number (14613318).

Almost surely, 2^125623015 is an apocalyptic number.

125623015 is a deficient number, since it is larger than the sum of its proper divisors (49736801).

125623015 is an equidigital number, since it uses as much as digits as its factorization.

125623015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512766 (or 512759 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 125623015 is about 11208.1673345824. The cubic root of 125623015 is about 500.8293103947.

Adding to 125623015 its reverse (510326521), we get a palindrome (635949536).

The spelling of 125623015 in words is "one hundred twenty-five million, six hundred twenty-three thousand, fifteen".