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133752025 = 52111513221
BaseRepresentation
bin1111111100011…
…10010011011001
3100022200022021201
413332032103121
5233220031100
621134434201
73212605411
oct776162331
9308608251
10133752025
1169554970
1238962961
1321930514
1413a99641
15bb2036a
hex7f8e4d9

133752025 has 24 divisors (see below), whose sum is σ = 182184768. Its totient is φ = 96600000.

The previous prime is 133752007. The next prime is 133752029. The reversal of 133752025 is 520257331.

It is not a de Polignac number, because 133752025 - 25 = 133751993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133751984 and 133752002.

It is not an unprimeable number, because it can be changed into a prime (133752029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39915 + ... + 43135.

It is an arithmetic number, because the mean of its divisors is an integer number (7591032).

Almost surely, 2133752025 is an apocalyptic number.

It is an amenable number.

133752025 is a deficient number, since it is larger than the sum of its proper divisors (48432743).

133752025 is a wasteful number, since it uses less digits than its factorization.

133752025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393 (or 3388 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 133752025 is about 11565.1210542735. The cubic root of 133752025 is about 511.4071417920.

It can be divided in two parts, 13375 and 2025, that added together give a triangular number (15400 = T175).

The spelling of 133752025 in words is "one hundred thirty-three million, seven hundred fifty-two thousand, twenty-five".

Divisors: 1 5 11 25 55 151 275 755 1661 3221 3775 8305 16105 35431 41525 80525 177155 486371 885775 2431855 5350081 12159275 26750405 133752025