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1925203285 = 52341164477
BaseRepresentation
bin111001011000000…
…0100010101010101
311222011121110102101
41302300010111111
512420323001120
6515011442101
765464646365
oct16260042525
94864543371
101925203285
118a87aa7a5
124588b6331
13248b19455
141439889a5
15b403a90a
hex72c04555

1925203285 has 8 divisors (see below), whose sum is σ = 2311244856. Its totient is φ = 1539495360.

The previous prime is 1925203283. The next prime is 1925203289. The reversal of 1925203285 is 5823025291.

It can be written as a sum of positive squares in 4 ways, for example, as 4835601 + 1920367684 = 2199^2 + 43822^2 .

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

It is not a de Polignac number, because 1925203285 - 21 = 1925203283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1925203283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70534 + ... + 93943.

It is an arithmetic number, because the mean of its divisors is an integer number (288905607).

Almost surely, 21925203285 is an apocalyptic number.

It is an amenable number.

1925203285 is a deficient number, since it is larger than the sum of its proper divisors (386041571).

1925203285 is a wasteful number, since it uses less digits than its factorization.

1925203285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166823.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1925203285 is about 43877.1385233814. The cubic root of 1925203285 is about 1244.0147546783.

The spelling of 1925203285 in words is "one billion, nine hundred twenty-five million, two hundred three thousand, two hundred eighty-five".

Divisors: 1 5 2341 11705 164477 822385 385040657 1925203285