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231452025 = 35271725933
BaseRepresentation
bin11011100101110…
…10110101111001
3121010111222111020
431302322311321
5433222431100
634544453053
75510211150
oct1562726571
9533458436
10231452025
11109715372
126561a189
1338c4a17c
1422a4c597
15154bd5a0
hexdcbad79

231452025 has 48 divisors (see below), whose sum is σ = 463077504. Its totient is φ = 99578880.

The previous prime is 231452009. The next prime is 231452071. The reversal of 231452025 is 520254132.

It is not a de Polignac number, because 231452025 - 24 = 231452009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231451986 and 231452004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4042 + ... + 21891.

It is an arithmetic number, because the mean of its divisors is an integer number (9647448).

Almost surely, 2231452025 is an apocalyptic number.

231452025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231452025 is an abundant number, since it is smaller than the sum of its proper divisors (231625479).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231452025 is a wasteful number, since it uses less digits than its factorization.

231452025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25970 (or 25965 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 231452025 is about 15213.5474166941. The cubic root of 231452025 is about 613.9792042032.

The spelling of 231452025 in words is "two hundred thirty-one million, four hundred fifty-two thousand, twenty-five".

Divisors: 1 3 5 7 15 17 21 25 35 51 75 85 105 119 175 255 357 425 525 595 1275 1785 2975 8925 25933 77799 129665 181531 388995 440861 544593 648325 907655 1322583 1944975 2204305 2722965 3086027 4538275 6612915 9258081 11021525 13614825 15430135 33064575 46290405 77150675 231452025