125342215 has 4 divisors (see below), whose sum is σ = 150410664. Its totient is φ = 100273768.

The previous prime is 125342213. The next prime is 125342219. The reversal of 125342215 is 512243521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512243521 = 6781 ⋅75541.

It is a cyclic number.

It is not a de Polignac number, because 125342215 - 2¹ = 125342213 is a prime.

It is a super-2 number, since 2×125342215² = 31421341722212450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125342215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125342213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12534217 + ... + 12534226.

It is an arithmetic number, because the mean of its divisors is an integer number (37602666).

Almost surely, 2^125342215 is an apocalyptic number.

125342215 is a deficient number, since it is larger than the sum of its proper divisors (25068449).

125342215 is an equidigital number, since it uses as much as digits as its factorization.

125342215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25068448.

The product of its digits is 2400, while the sum is 25.

The square root of 125342215 is about 11195.6337471355. The cubic root of 125342215 is about 500.4558709038.

Adding to 125342215 its reverse (512243521), we get a palindrome (637585736).

The spelling of 125342215 in words is "one hundred twenty-five million, three hundred forty-two thousand, two hundred fifteen".