215054525 has 12 divisors (see below), whose sum is σ = 304763232. Its totient is φ = 147465840.

The previous prime is 215054513. The next prime is 215054551. The reversal of 215054525 is 525450512.

It is not a de Polignac number, because 215054525 - 2⁴ = 215054509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 614267 + ... + 614616.

It is an arithmetic number, because the mean of its divisors is an integer number (25396936).

Almost surely, 2^215054525 is an apocalyptic number.

215054525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215054525 is a deficient number, since it is larger than the sum of its proper divisors (89708707).

215054525 is a wasteful number, since it uses less digits than its factorization.

215054525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228900 (or 1228895 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 215054525 is about 14664.7374678171. The cubic root of 215054525 is about 599.1232797451.

The spelling of 215054525 in words is "two hundred fifteen million, fifty-four thousand, five hundred twenty-five".