919380225 has 24 divisors (see below), whose sum is σ = 1529743360. Its totient is φ = 487206720.

The previous prime is 919380223. The next prime is 919380239. The reversal of 919380225 is 522083919.

It is not a de Polignac number, because 919380225 - 2¹ = 919380223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (919380223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27265 + ... + 50814.

Almost surely, 2^919380225 is an apocalyptic number.

It is an amenable number.

919380225 is a deficient number, since it is larger than the sum of its proper divisors (610363135).

919380225 is a wasteful number, since it uses less digits than its factorization.

919380225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78249 (or 78244 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 919380225 is about 30321.2833666387. The cubic root of 919380225 is about 972.3703763457.

The spelling of 919380225 in words is "nine hundred nineteen million, three hundred eighty thousand, two hundred twenty-five".