215426125 has 16 divisors (see below), whose sum is σ = 284669424. Its totient is φ = 162201600.

The previous prime is 215426111. The next prime is 215426129. The reversal of 215426125 is 521624512.

215426125 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 8 ways, for example, as 7518564 + 207907561 = 2742^2 + 14419^2 .

It is not a de Polignac number, because 215426125 - 2⁵ = 215426093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215426093 and 215426102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215426129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48564 + ... + 52813.

It is an arithmetic number, because the mean of its divisors is an integer number (17791839).

Almost surely, 2^215426125 is an apocalyptic number.

215426125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215426125 is a deficient number, since it is larger than the sum of its proper divisors (69243299).

215426125 is a wasteful number, since it uses less digits than its factorization.

215426125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101409 (or 101399 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 215426125 is about 14677.4018477386. The cubic root of 215426125 is about 599.4681629809.

The spelling of 215426125 in words is "two hundred fifteen million, four hundred twenty-six thousand, one hundred twenty-five".