215500725950 has 12 divisors (see below), whose sum is σ = 400831350360. Its totient is φ = 86200290360.

The previous prime is 215500725931. The next prime is 215500725959. The reversal of 215500725950 is 59527005512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 215500725898 and 215500725907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215500725959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2155007210 + ... + 2155007309.

It is an arithmetic number, because the mean of its divisors is an integer number (33402612530).

Almost surely, 2^215500725950 is an apocalyptic number.

215500725950 is a deficient number, since it is larger than the sum of its proper divisors (185330624410).

215500725950 is a wasteful number, since it uses less digits than its factorization.

215500725950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310014531 (or 4310014526 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 215500725950 in words is "two hundred fifteen billion, five hundred million, seven hundred twenty-five thousand, nine hundred fifty".