73452425437 has 4 divisors (see below), whose sum is σ = 74179677276. Its totient is φ = 72725173600.

The previous prime is 73452425429. The next prime is 73452425441.

73452425437 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58093532676 + 15358892761 = 241026^2 + 123931^2 .

It is a cyclic number.

It is not a de Polignac number, because 73452425437 - 2³ = 73452425429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73452425477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363625768 + ... + 363625969.

It is an arithmetic number, because the mean of its divisors is an integer number (18544919319).

Almost surely, 2^73452425437 is an apocalyptic number.

It is an amenable number.

73452425437 is a deficient number, since it is larger than the sum of its proper divisors (727251839).

73452425437 is a wasteful number, since it uses less digits than its factorization.

73452425437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727251838.

The product of its digits is 2822400, while the sum is 46.

The spelling of 73452425437 in words is "seventy-three billion, four hundred fifty-two million, four hundred twenty-five thousand, four hundred thirty-seven".