144551425 has 12 divisors (see below), whose sum is σ = 189788076. Its totient is φ = 108838400.

The previous prime is 144551417. The next prime is 144551431. The reversal of 144551425 is 524155441.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 12117361 + 132434064 = 3481^2 + 11508^2 .

It is not a de Polignac number, because 144551425 - 2³ = 144551417 is a prime.

It is a super-2 number, since 2×144551425² = 41790228939061250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169636 + ... + 170485.

It is an arithmetic number, because the mean of its divisors is an integer number (15815673).

Almost surely, 2^144551425 is an apocalyptic number.

It is an amenable number.

144551425 is a deficient number, since it is larger than the sum of its proper divisors (45236651).

144551425 is a wasteful number, since it uses less digits than its factorization.

144551425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340148 (or 340143 counting only the distinct ones).

The product of its digits is 16000, while the sum is 31.

The square root of 144551425 is about 12022.9540879103. The cubic root of 144551425 is about 524.8164740225.

The spelling of 144551425 in words is "one hundred forty-four million, five hundred fifty-one thousand, four hundred twenty-five".