215125041 has 4 divisors (see below), whose sum is σ = 286833392. Its totient is φ = 143416692.

The previous prime is 215125037. The next prime is 215125061. The reversal of 215125041 is 140521512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 215125041 - 2² = 215125037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 215124999 and 215125017.

It is not an unprimeable number, because it can be changed into a prime (215125061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35854171 + ... + 35854176.

It is an arithmetic number, because the mean of its divisors is an integer number (71708348).

Almost surely, 2^215125041 is an apocalyptic number.

It is an amenable number.

215125041 is a deficient number, since it is larger than the sum of its proper divisors (71708351).

215125041 is an equidigital number, since it uses as much as digits as its factorization.

215125041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71708350.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 215125041 is about 14667.1415415547. The cubic root of 215125041 is about 599.1887564119.

Adding to 215125041 its reverse (140521512), we get a palindrome (355646553).

The spelling of 215125041 in words is "two hundred fifteen million, one hundred twenty-five thousand, forty-one".