73144225 has 24 divisors (see below), whose sum is σ = 113082048. Its totient is φ = 45595200.

The previous prime is 73144219. The next prime is 73144231. The reversal of 73144225 is 52244137.

It is an interprime number because it is at equal distance from previous prime (73144219) and next prime (73144231).

It is a de Polignac number, because none of the positive numbers 2^k-73144225 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73144193 and 73144202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17074 + ... + 20923.

It is an arithmetic number, because the mean of its divisors is an integer number (4711752).

Almost surely, 2^73144225 is an apocalyptic number.

It is an amenable number.

73144225 is a deficient number, since it is larger than the sum of its proper divisors (39937823).

73144225 is a wasteful number, since it uses less digits than its factorization.

73144225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38025 (or 38020 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 73144225 is about 8552.4397103984. The cubic root of 73144225 is about 418.2089738266.

The spelling of 73144225 in words is "seventy-three million, one hundred forty-four thousand, two hundred twenty-five".