215025313026 has 32 divisors (see below), whose sum is σ = 435875525568. Its totient is φ = 70706841920.

The previous prime is 215025312977. The next prime is 215025313033. The reversal of 215025313026 is 620313520512.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 215025312984 and 215025313002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18256 + ... + 656036.

It is an arithmetic number, because the mean of its divisors is an integer number (13621110174).

Almost surely, 2^215025313026 is an apocalyptic number.

215025313026 is an abundant number, since it is smaller than the sum of its proper divisors (220850212542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215025313026 is a wasteful number, since it uses less digits than its factorization.

215025313026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638546.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 215025313026 its reverse (620313520512), we get a palindrome (835338833538).

The spelling of 215025313026 in words is "two hundred fifteen billion, twenty-five million, three hundred thirteen thousand, twenty-six".