221077325 has 12 divisors (see below), whose sum is σ = 313298400. Its totient is φ = 151595760.

The previous prime is 221077309. The next prime is 221077379. The reversal of 221077325 is 523770122.

It is not a de Polignac number, because 221077325 - 2⁴ = 221077309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 631475 + ... + 631824.

It is an arithmetic number, because the mean of its divisors is an integer number (26108200).

Almost surely, 2^221077325 is an apocalyptic number.

221077325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221077325 is a deficient number, since it is larger than the sum of its proper divisors (92221075).

221077325 is a wasteful number, since it uses less digits than its factorization.

221077325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263316 (or 1263311 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 221077325 is about 14868.6692410585. The cubic root of 221077325 is about 604.6648645899.

The spelling of 221077325 in words is "two hundred twenty-one million, seventy-seven thousand, three hundred twenty-five".