73550358225 has 18 divisors (see below), whose sum is σ = 131736864246. Its totient is φ = 39226857600.

The previous prime is 73550358209. The next prime is 73550358229. The reversal of 73550358225 is 52285305537.

It is a happy number.

73550358225 is a `hidden beast` number, since 73 + 5 + 5 + 0 + 358 + 225 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 7659575361 + 65890782864 = 87519^2 + 256692^2 .

It is not a de Polignac number, because 73550358225 - 2⁴ = 73550358209 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 (73550358229) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 163445016 + ... + 163445465.

Almost surely, 2^73550358225 is an apocalyptic number.

73550358225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

73550358225 is a deficient number, since it is larger than the sum of its proper divisors (58186506021).

73550358225 is a wasteful number, since it uses less digits than its factorization.

73550358225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326890497 (or 326890489 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 45.

The spelling of 73550358225 in words is "seventy-three billion, five hundred fifty million, three hundred fifty-eight thousand, two hundred twenty-five".