215226004425 has 24 divisors (see below), whose sum is σ = 360852171840. Its totient is φ = 113170478400.

The previous prime is 215226004397. The next prime is 215226004429. The reversal of 215226004425 is 524400622512.

It is not a de Polignac number, because 215226004425 - 2²⁰ = 215224955849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215226004429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20203690 + ... + 20214339.

It is an arithmetic number, because the mean of its divisors is an integer number (15035507160).

Almost surely, 2^215226004425 is an apocalyptic number.

215226004425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215226004425 is a deficient number, since it is larger than the sum of its proper divisors (145626167415).

215226004425 is a wasteful number, since it uses less digits than its factorization.

215226004425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40418113 (or 40418108 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 215226004425 its reverse (524400622512), we get a palindrome (739626626937).

The spelling of 215226004425 in words is "two hundred fifteen billion, two hundred twenty-six million, four thousand, four hundred twenty-five".