144747225 has 108 divisors (see below), whose sum is σ = 317918640. Its totient is φ = 62596800.

The previous prime is 144747221. The next prime is 144747259. The reversal of 144747225 is 522747441.

It is not a de Polignac number, because 144747225 - 2² = 144747221 is a prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 144747225.

It is not an unprimeable number, because it can be changed into a prime (144747221) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 209130 + ... + 209820.

Almost surely, 2^144747225 is an apocalyptic number.

144747225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144747225 is an abundant number, since it is smaller than the sum of its proper divisors (173171415).

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

144747225 is a wasteful number, since it uses less digits than its factorization.

144747225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740 (or 725 counting only the distinct ones).

The product of its digits is 62720, while the sum is 36.

The square root of 144747225 is about 12031.0940898989. The cubic root of 144747225 is about 525.0533279163.

The spelling of 144747225 in words is "one hundred forty-four million, seven hundred forty-seven thousand, two hundred twenty-five".