637225073 has 4 divisors (see below), whose sum is σ = 641040960. Its totient is φ = 633409188.

The previous prime is 637225037. The next prime is 637225079. The reversal of 637225073 is 370522736.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 637225073 - 2¹² = 637220977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (637225079) 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, 1907693 + ... + 1908026.

It is an arithmetic number, because the mean of its divisors is an integer number (160260240).

Almost surely, 2^637225073 is an apocalyptic number.

It is an amenable number.

637225073 is a deficient number, since it is larger than the sum of its proper divisors (3815887).

637225073 is a wasteful number, since it uses less digits than its factorization.

637225073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815886.

The product of its (nonzero) digits is 52920, while the sum is 35.

The square root of 637225073 is about 25243.3173929260. The cubic root of 637225073 is about 860.5265717853.

The spelling of 637225073 in words is "six hundred thirty-seven million, two hundred twenty-five thousand, seventy-three".