19755225 has 96 divisors (see below), whose sum is σ = 42973440. Its totient is φ = 8709120.

The previous prime is 19755223. The next prime is 19755227. The reversal of 19755225 is 52255791.

19755225 = T₃₀₀ + T₃₀₁ + ... + T₅₂₅.

It is an interprime number because it is at equal distance from previous prime (19755223) and next prime (19755227).

It is not a de Polignac number, because 19755225 - 2¹ = 19755223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19755225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19755221) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 174769 + ... + 174881.

It is an arithmetic number, because the mean of its divisors is an integer number (447640).

Almost surely, 2^19755225 is an apocalyptic number.

19755225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19755225 is an abundant number, since it is smaller than the sum of its proper divisors (23218215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19755225 is a wasteful number, since it uses less digits than its factorization.

19755225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 165 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 19755225 is about 4444.6850282107. The cubic root of 19755225 is about 270.3298437979.

The spelling of 19755225 in words is "nineteen million, seven hundred fifty-five thousand, two hundred twenty-five".