216927525 has 12 divisors (see below), whose sum is σ = 358653632. Its totient is φ = 115694640.

The previous prime is 216927523. The next prime is 216927533. The reversal of 216927525 is 525729612.

216927525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216927525 - 2¹ = 216927523 is a prime.

It is a super-2 number, since 2×216927525² = 94115102205251250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216927523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1446109 + ... + 1446258.

Almost surely, 2^216927525 is an apocalyptic number.

216927525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216927525 is a deficient number, since it is larger than the sum of its proper divisors (141726107).

216927525 is a wasteful number, since it uses less digits than its factorization.

216927525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892380 (or 2892375 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 216927525 is about 14728.4596954332. The cubic root of 216927525 is about 600.8575930839.

The spelling of 216927525 in words is "two hundred sixteen million, nine hundred twenty-seven thousand, five hundred twenty-five".