20779325 has 12 divisors (see below), whose sum is σ = 29447520. Its totient is φ = 14248560.

The previous prime is 20779307. The next prime is 20779337. The reversal of 20779325 is 52397702.

It is not a de Polignac number, because 20779325 - 2²⁴ = 4002109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59195 + ... + 59544.

It is an arithmetic number, because the mean of its divisors is an integer number (2453960).

Almost surely, 2^20779325 is an apocalyptic number.

20779325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20779325 is a deficient number, since it is larger than the sum of its proper divisors (8668195).

20779325 is a wasteful number, since it uses less digits than its factorization.

20779325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118756 (or 118751 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 20779325 is about 4558.4344900415. The cubic root of 20779325 is about 274.9226228584.

The spelling of 20779325 in words is "twenty million, seven hundred seventy-nine thousand, three hundred twenty-five".