919225 has 12 divisors (see below), whose sum is σ = 1156176. Its totient is φ = 724880.

The previous prime is 919223. The next prime is 919229. The reversal of 919225 is 522919.

919225 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 919225 - 2¹ = 919223 is a prime.

It is a Duffinian number.

919225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 919193 and 919202.

It is not an unprimeable number, because it can be changed into a prime (919223) 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, 1854 + ... + 2296.

It is an arithmetic number, because the mean of its divisors is an integer number (96348).

2⁹¹⁹²²⁵ is an apocalyptic number.

It is an amenable number.

919225 is a deficient number, since it is larger than the sum of its proper divisors (236951).

919225 is a wasteful number, since it uses less digits than its factorization.

919225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 531 counting only the distinct ones).

The product of its digits is 1620, while the sum is 28.

The square root of 919225 is about 958.7622228686. The cubic root of 919225 is about 97.2315649374.

It can be divided in two parts, 91 and 9225, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 919225 in words is "nine hundred nineteen thousand, two hundred twenty-five".