72080725 has 6 divisors (see below), whose sum is σ = 89380130. Its totient is φ = 57664560.

The previous prime is 72080683. The next prime is 72080753. The reversal of 72080725 is 52708027.

It can be written as a sum of positive squares in 3 ways, for example, as 25745476 + 46335249 = 5074^2 + 6807^2 .

It is a de Polignac number, because none of the positive numbers 2^k-72080725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1441590 + ... + 1441639.

Almost surely, 2^72080725 is an apocalyptic number.

It is an amenable number.

72080725 is a deficient number, since it is larger than the sum of its proper divisors (17299405).

72080725 is a wasteful number, since it uses less digits than its factorization.

72080725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883239 (or 2883234 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 72080725 is about 8490.0368079296. The cubic root of 72080725 is about 416.1721831765.

The spelling of 72080725 in words is "seventy-two million, eighty thousand, seven hundred twenty-five".