213551025 has 24 divisors (see below), whose sum is σ = 373842144. Its totient is φ = 107193600.

The previous prime is 213550979. The next prime is 213551053. The reversal of 213551025 is 520155312.

It is a happy number.

It is not a de Polignac number, because 213551025 - 2²⁰ = 212502449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213550986 and 213551004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82471 + ... + 85020.

It is an arithmetic number, because the mean of its divisors is an integer number (15576756).

Almost surely, 2^213551025 is an apocalyptic number.

213551025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213551025 is a deficient number, since it is larger than the sum of its proper divisors (160291119).

213551025 is a wasteful number, since it uses less digits than its factorization.

213551025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167521 (or 167516 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 213551025 is about 14613.3851314471. The cubic root of 213551025 is about 597.7238063794.

The spelling of 213551025 in words is "two hundred thirteen million, five hundred fifty-one thousand, twenty-five".