72703725 has 24 divisors (see below), whose sum is σ = 124352160. Its totient is φ = 37437120.

The previous prime is 72703723. The next prime is 72703733. The reversal of 72703725 is 52730727.

It is not a de Polignac number, because 72703725 - 2¹ = 72703723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72703721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14539 + ... + 18888.

It is an arithmetic number, because the mean of its divisors is an integer number (5181340).

Almost surely, 2^72703725 is an apocalyptic number.

72703725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72703725 is a deficient number, since it is larger than the sum of its proper divisors (51648435).

72703725 is a wasteful number, since it uses less digits than its factorization.

72703725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33469 (or 33464 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 33.

The square root of 72703725 is about 8526.6479345637. The cubic root of 72703725 is about 417.3677494751.

The spelling of 72703725 in words is "seventy-two million, seven hundred three thousand, seven hundred twenty-five".