72525247 has 8 divisors (see below), whose sum is σ = 76924512. Its totient is φ = 68140800.

The previous prime is 72525241. The next prime is 72525283. The reversal of 72525247 is 74252527.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72525247 - 2¹⁵ = 72492479 is a prime.

It is a super-2 number, since 2×72525247² = 10519822904822018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72525241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7347 + ... + 14107.

It is an arithmetic number, because the mean of its divisors is an integer number (9615564).

Almost surely, 2^72525247 is an apocalyptic number.

72525247 is a deficient number, since it is larger than the sum of its proper divisors (4399265).

72525247 is a wasteful number, since it uses less digits than its factorization.

72525247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7409.

The product of its digits is 39200, while the sum is 34.

The square root of 72525247 is about 8516.1756088047. The cubic root of 72525247 is about 417.0259421395.

The spelling of 72525247 in words is "seventy-two million, five hundred twenty-five thousand, two hundred forty-seven".