144661376025 has 72 divisors (see below), whose sum is σ = 265523123736. Its totient is φ = 75258393600.

The previous prime is 144661376017. The next prime is 144661376029. The reversal of 144661376025 is 520673166441.

144661376025 is a `hidden beast` number, since 1 + 4 + 4 + 6 + 6 + 1 + 37 + 602 + 5 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 25826739849 + 118834636176 = 160707^2 + 344724^2 .

It is not a de Polignac number, because 144661376025 - 2³ = 144661376017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (144661376029) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2027965 + ... + 2098085.

It is an arithmetic number, because the mean of its divisors is an integer number (3687821163).

Almost surely, 2^144661376025 is an apocalyptic number.

144661376025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144661376025 is a deficient number, since it is larger than the sum of its proper divisors (120861747711).

144661376025 is a wasteful number, since it uses less digits than its factorization.

144661376025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70363 (or 70355 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 144661376025 in words is "one hundred forty-four billion, six hundred sixty-one million, three hundred seventy-six thousand, twenty-five".