225745019 has 8 divisors (see below), whose sum is σ = 233940960. Its totient is φ = 217576576.

The previous prime is 225744943. The next prime is 225745021. The reversal of 225745019 is 910547522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225745019 - 2⁸ = 225744763 is a prime.

It is a super-2 number, since 2×225745019² = 101921627206620722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225745019.

It is not an unprimeable number, because it can be changed into a prime (225745319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10634 + ... + 23760.

It is an arithmetic number, because the mean of its divisors is an integer number (29242620).

Almost surely, 2^225745019 is an apocalyptic number.

225745019 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

225745019 is a deficient number, since it is larger than the sum of its proper divisors (8195941).

225745019 is a wasteful number, since it uses less digits than its factorization.

225745019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13749.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 225745019 is about 15024.8134431014. The cubic root of 225745019 is about 608.8907719761.

The spelling of 225745019 in words is "two hundred twenty-five million, seven hundred forty-five thousand, nineteen".