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55025325 = 345229937
BaseRepresentation
bin1101000111100…
…1111010101101
310211112120120000
43101321322231
5103041302300
65243214513
71235464455
oct321717255
9124476500
1055025325
1129073383
1216517439
13b527884
147444d65
154c6dc00
hex3479ead

55025325 has 60 divisors (see below), whose sum is σ = 105553140. Its totient is φ = 28304640.

The previous prime is 55025323. The next prime is 55025329. The reversal of 55025325 is 52352055.

It can be written as a sum of positive squares in 6 ways, for example, as 8608356 + 46416969 = 2934^2 + 6813^2 .

It is not a de Polignac number, because 55025325 - 21 = 55025323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55025323) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 58257 + ... + 59193.

It is an arithmetic number, because the mean of its divisors is an integer number (1759219).

Almost surely, 255025325 is an apocalyptic number.

It is an amenable number.

55025325 is a deficient number, since it is larger than the sum of its proper divisors (50527815).

55025325 is a wasteful number, since it uses less digits than its factorization.

55025325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55025325 is about 7417.9057017463. The cubic root of 55025325 is about 380.3536066778.

The spelling of 55025325 in words is "fifty-five million, twenty-five thousand, three hundred twenty-five".

Divisors: 1 3 5 9 15 25 27 29 45 75 81 87 135 145 225 261 405 435 675 725 783 937 1305 2025 2175 2349 2811 3915 4685 6525 8433 11745 14055 19575 23425 25299 27173 42165 58725 70275 75897 81519 126495 135865 210825 244557 379485 407595 632475 679325 733671 1222785 1897425 2037975 2201013 3668355 6113925 11005065 18341775 55025325