125243215 has 8 divisors (see below), whose sum is σ = 150359760. Its totient is φ = 100149312.

The previous prime is 125243201. The next prime is 125243243. The reversal of 125243215 is 512342521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125243215 - 2⁷ = 125243087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125243215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10947 + ... + 19243.

It is an arithmetic number, because the mean of its divisors is an integer number (18794970).

Almost surely, 2^125243215 is an apocalyptic number.

125243215 is a deficient number, since it is larger than the sum of its proper divisors (25116545).

125243215 is an equidigital number, since it uses as much as digits as its factorization.

125243215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11321.

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

The square root of 125243215 is about 11191.2115072498. The cubic root of 125243215 is about 500.3240765700.

Adding to 125243215 its reverse (512342521), we get a palindrome (637585736).

The spelling of 125243215 in words is "one hundred twenty-five million, two hundred forty-three thousand, two hundred fifteen".