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72525001 = 1273731531
BaseRepresentation
bin1000101001010…
…10010011001001
312001110122121011
410110222103021
5122031300001
611110243521
71540311103
oct424522311
9161418534
1072525001
1137a3611a
12203565a1
1312043c03
1498bc573
156578d51
hex452a4c9

72525001 has 8 divisors (see below), whose sum is σ = 73339904. Its totient is φ = 71714160.

The previous prime is 72524999. The next prime is 72525007. The reversal of 72525001 is 10052527.

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 72525001 - 21 = 72524999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72525007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46606 + ... + 48136.

It is an arithmetic number, because the mean of its divisors is an integer number (9167488).

Almost surely, 272525001 is an apocalyptic number.

It is an amenable number.

72525001 is a deficient number, since it is larger than the sum of its proper divisors (814903).

72525001 is a wasteful number, since it uses less digits than its factorization.

72525001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 72525001 is about 8516.1611656896. The cubic root of 72525001 is about 417.0254706324.

Adding to 72525001 its reverse (10052527), we get a palindrome (82577528).

The spelling of 72525001 in words is "seventy-two million, five hundred twenty-five thousand, one".

Divisors: 1 127 373 1531 47371 194437 571063 72525001