215452266025 has 12 divisors (see below), whose sum is σ = 268516962252. Its totient is φ = 171486875840.

The previous prime is 215452265983. The next prime is 215452266037. The reversal of 215452266025 is 520662254512.

215452266025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 59582857216 + 155869408809 = 244096^2 + 394803^2 .

It is not a de Polignac number, because 215452266025 - 2⁹ = 215452265513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21868402 + ... + 21878251.

It is an arithmetic number, because the mean of its divisors is an integer number (22376413521).

Almost surely, 2^215452266025 is an apocalyptic number.

215452266025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215452266025 is a deficient number, since it is larger than the sum of its proper divisors (53064696227).

215452266025 is a wasteful number, since it uses less digits than its factorization.

215452266025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43746860 (or 43746855 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 215452266025 in words is "two hundred fifteen billion, four hundred fifty-two million, two hundred sixty-six thousand, twenty-five".